Geometry Terminology

noun a natural talent or inclination

verb past tense and past participle of bend

adjective not straight or upright; curved or inclined

• The metal rod was bent out of shape after being exposed to extreme heat.
• I accidentally bent my phone screen when it fell out of my pocket.
• He always manages to bend the rules to his advantage.
• Her mind was bent on finding a solution to the problem.

noun a concave shape or surface

adjective having a surface that curves inward

• The concave shape of the mirror allowed for a wider field of view.
• The concave lens makes things look smaller than they actually are.
• That concave skateboard ramp is perfect for practicing tricks.
• Her concave smile hinted at hidden sadness beneath the surface.

noun the action of dilating a part or organ of the body

• The doctor prescribed eye drops to help with pupil dilation.
• I heard that staring at a screen for too long can cause eye dilation.
• I can't believe how much my eyes dilated when I saw that cute puppy!
• The company's profits experienced a significant dilation after the new marketing campaign.

noun a word (other than a pronoun) used to identify any of a class of people, places, or things common noun, or to name a particular one of these proper noun

adjective a word or phrase naming an attribute, added to or grammatically related to a noun to modify or describe it

• The equilateral triangle has three congruent sides and three congruent angles.
• I drew an equilateral triangle for my math homework.
• That equilateral shape is so cool, dude!
• In a perfect world, all relationships would be equilateral, with equal give and take.

noun a person of a particular kind, especially one who is important or distinctive in some way

verb to be the most significant aspect or outcome

• The financial report includes a detailed breakdown of each figure.
• Can you believe the figure they quoted for that car?
• That figure is way off the mark.
• She cut a striking figure in her red dress.

adjective describing something with multiple aspects or perspectives

• The issue at hand is quite many sided and requires a thorough analysis from different perspectives.
• There are many sided opinions on this topic, so it's hard to come to a consensus.
• This situation is so many sided, it's like trying to solve a Rubik's cube.
• Her personality is like a many sided diamond, each facet revealing a different aspect of her character.

verb to indicate or direct attention to a specific thing or direction

• The teacher asked the students to point at the correct answer on the board.
• Can you point at where we parked the car?
• She pointed at the cute guy across the room.
• His actions point at a deeper issue within the organization.

noun a particular detail, aspect, or element

verb to emphasize or highlight something

• The professor used a laser pointer to point up at the graph on the screen.
• Can you point up at the sign so I can see what it says?
• Yo, point up at that cool graffiti on the wall!
• His hard work and dedication really point up to his success in the company.

noun A courtyard or open space enclosed by buildings, typically on a college campus.

• The university campus is designed with a beautiful quadrangle at its center.
• Let's meet at the quadrangle before heading to class.
• Hey, let's chill at the quad later.
• The company's organizational structure can be seen as a quadrangle of interconnected departments.

noun a four-sided polygon

adjective relating to or having four sides

• A quadrilateral is a polygon with four sides and four angles.
• Hey, did you know that a quadrilateral is just a fancy word for a four-sided shape?
• I aced that math test because I knew how to classify a quadrilateral.
• The team's strategy was like a quadrilateral, with each side representing a different aspect of the plan.

noun the length of this line

• The radius of the circle is calculated by measuring the distance from the center to any point on the circumference.
• You can find the radius by measuring from the middle to the edge of the circle.
• The radius is just the distance from the center to the outside.
• In life, our comfort zone can be like a radius limiting our experiences.

adjective describing or relating to a straight line or lines

• The architect designed the building with a rectilinear shape to maximize space efficiency.
• The house has a rectilinear layout, with all the rooms lined up in a row.
• I like how the furniture is arranged in a rectilinear fashion, it looks so neat!
• His thought process is very rectilinear, he always approaches problems in a straightforward manner.

noun a route or path that forms a circle around an area

adjective shaped like a circle or sphere

adverb approximately; about

• The town is located round about 20 miles from here.
• I think the party is round about 8 o'clock.
• Let's meet up round about the usual spot.
• Her thoughts were swirling round about in her mind.

noun a straight line that intersects a curve at two or more points

adjective relating to or denoting a straight line that intersects a curve at two or more points

• The secant of an angle in a right triangle is the ratio of the length of the hypotenuse to the length of the adjacent side.
• To find the secant of an angle, just divide the length of the hypotenuse by the length of the adjacent side.
• If you want to get the secant, just do hypotenuse divided by adjacent side.
• In life, the secant represents the connection between two different paths, showing how they intersect and relate to each other.

noun a half of a circle, formed by a diameter and the connected arc

• The area of a semicircle can be calculated by using the formula A = (πr^2)/2.
• I like to sketch semicircles when doodling in my notebook.
• That pizza was so big, it looked like a semicircle when we cut it into slices.
• Her smile was like a semicircle, spreading from ear to ear.

verb to form or create something into a particular shape

adjective having a particular shape or form

• The architect designed a uniquely shaped building that stood out in the city skyline.
• I found a heart-shaped rock on the beach and decided to keep it as a souvenir.
• She has a pear-shaped body, but she rocks it with confidence.
• His actions shaped the outcome of the project, leading to its success.

noun one of the two surfaces of a flat object

adjective located on one side

adverb to or towards one side

• On one side of the debate, there are those who argue for stricter regulations.
• I'll sit on this side of the table so we can all fit.
• Let's chill on the side of the building and have a smoke.
• She always looks at the bright side of things, no matter how difficult the situation.

noun a round solid figure, or its surface, with every point on its surface equidistant from its center

• The sphere of influence of a corporation can extend globally.
• She's really into the whole social media sphere.
• I'm not really in your sphere, dude.
• Her expertise in the legal sphere is unmatched.

adjective relating to or having the shape of a sphere; round or ball-shaped

• The planet Earth is approximately spherical in shape.
• I love playing with a spherical ball in the park.
• Check out that dude with the spherical head!
• Her mind was like a spherical puzzle, complex and intriguing.

noun a straight line or part of a straight line

adjective extending or moving in one direction without curving or bending

adverb directly or in a straight line

• Please walk straight ahead until you reach the end of the hallway.
• Just go straight and you'll see the building on your left.
• I'm telling you, he's straight up lying to your face.
• Her words hit me straight in the heart.

noun the angle formed between two lines or rays that extend from the ends of an arc or chord

verb to extend or stretch underneath or across something

• The angle subtended by the two lines is equal to 90 degrees.
• The lines make an angle of 90 degrees.
• Those lines form a 90-degree angle.
• Their friendship subtends all obstacles.

adjective describing a shape with three sides and three angles

• The engineer studied the triangular shape to determine its stability.
• I love the triangular sandwiches at the cafe.
• Check out that cool triangular tattoo on his arm!
• The relationship between the three friends was like a triangular bond, strong and unbreakable.

noun a green pigment used in painting

verb to turn or change direction

• The architect designed a building with a vert facade, showcasing modern and sleek lines.
• I love looking out at the vert hills from my bedroom window.
• Let's hit up that vert skatepark this weekend and show off our skills.
• His mood took a vert turn when he found out he got the job offer.

noun a polygon with nine sides and nine angles

• A nonagon is a polygon with nine sides and nine angles.
• I learned in math class that a nonagon has nine sides.
• Check out this cool nonagon shape I drew in art class.
• The nonagon of emotions she felt towards him was complex and hard to decipher.

noun a ring-shaped structure or part, such as the area between the two concentric circles

• The annulus is the outermost layer of the intervertebral disc.
• I learned in biology class that the annulus is like a protective ring around the disc.
• The annulus is like the disc's bodyguard, keeping it safe and secure.
• The annulus acts like a fortress, protecting the inner parts of the disc from harm.

noun the study of the universe as an ordered whole; geometry of the cosmos

• Cosmometry is a branch of metaphysics that deals with the geometric principles underlying the creation and structure of the universe.
• I've been reading up on cosmometry and it's blowing my mind how everything in the universe is interconnected.
• Cosmometry is like the blueprint of the universe, man. It's wild to think about.
• Exploring cosmometry is like peeling back the layers of reality to reveal the hidden patterns and connections that govern the cosmos.

adjective relating to or in the form of a plane; flat or level

• The engineer designed a planar surface for the new building facade.
• I think a planar layout would work best for the living room.
• Let's keep it planar and simple for this project.
• Her emotions were planar, showing no signs of depth or complexity.

verb to make or form something perpendicular

adjective describing something that is perpendicular or at right angles to a surface

• The architect ensured that the walls were perpendiculate to the foundation for structural integrity.
• Make sure to hang that picture perpendiculate to the floor so it looks straight.
• I tried to stack the books perpendiculate but they kept falling over.
• His thoughts were perpendiculate, always aligned and organized in a logical manner.

noun a word that refers to a person, place, thing, event, substance, or quality

adjective a word that describes or gives more information about a noun

• The acute bisectrix of the angle formed by the two lines is 30 degrees.
• The acute bisectrix cuts the angle in half at a 30 degree angle.
• The sharp bisectrix splits the angle right down the middle.
• The acute bisectrix acts like a sharp knife dividing the angle perfectly.

noun a word that represents a person, place, thing, or idea, in this case 'acuto-' is the noun being described

adjective a word that describes or modifies a noun or pronoun, in this case 'acuto-' is describing a noun

• The acuto-angled roof of the building helps with water drainage.
• I love the acuto- design of that new sports car.
• Check out the acuto- edges on that phone case, it looks so cool.
• His acuto- wit always keeps the conversation lively and interesting.