内角 (nèi jiǎ) — interior angle (of a polygon) | tongtong Chinese Dictionary

Definition

noun

interior angle (of a polygon)

Measure word · 个

Examples

内角180。
Sān jiǎo xíng de sān gè nèi jiǎ zhī hé děng yú 180 dù.
The sum of the three interior angles of a triangle is 180 degrees.
内角108。
Zhè ge zhèng wǔ biān xíng de měi gè nèi jiǎ dōu shì 108 dù.
Each interior angle of this regular pentagon is 108 degrees.
内角。
Jì suàn duō biān xíng de nèi jiǎ xū yào zhī dào biān shù.
To calculate the interior angles of a polygon, you need to know the number of sides.

Origin

Compound word

构词法gòucífǎ

偏正piānzhèngModifier + head

The first part narrows down the second: it says what kind of thing the head is.

内 means inside and 角 angle, denoting an angle within a shape.

Characters in this word

Two or more meaningful parts placed together so that their meanings combine into a new one.

入入rùto enter
冂冂jiōnghouse

The shape shows 入 entering into 冂, a house, so it pictures bringing something indoors, giving the sense inside.

A drawing of the thing itself, worn down over three thousand years into a few strokes.

The form 角 is a picture of a horn.

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