Semicircle

Pronunciation: /ˈsɛm.iˌsɜr.kəl/

Definitions of semicircle

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

Example Sentences

A1 A semicircle is half of a circle.

A2 The children drew a semicircle on the paper.

B1 The architect designed a building with a semicircle entrance.

B2 The semicircle shape of the amphitheater provided good acoustics for the concert.

C1 The semicircle of students gathered around the teacher for a group discussion.

C2 The semicircle of trees provided a natural barrier from the wind.

Examples of semicircle in a Sentence

formal The area of a semicircle can be calculated by using the formula A = (πr^2)/2.

informal I like to sketch semicircles when doodling in my notebook.

slang That pizza was so big, it looked like a semicircle when we cut it into slices.

figurative Her smile was like a semicircle, spreading from ear to ear.

Grammatical Forms of semicircle

• plural: semicircles
• comparative: more semicircular
• superlative: most semicircular
• present tense: forms a semicircle
• future tense: will form a semicircle
• perfect tense: has formed a semicircle
• continuous tense: is forming a semicircle
• singular: semicircle
• positive degree: semicircle
• infinitive: to form a semicircle
• gerund: forming a semicircle
• participle: formed a semicircle

Origin and Evolution of semicircle

First Known Use: 1250 year

Language of Origin: Latin

Story behind the word: The word 'semicircle' originated from the Latin words 'semi-' meaning half and 'circulus' meaning circle.

Evolution of the word: The term 'semicircle' has retained its original meaning of half a circle since its first known use in the 13th century. It is commonly used in geometry to refer to a shape that is half of a circle.