内角 (nèi jiǎ) — interior angle (of a polygon)

Definição

Exemplos

• 三角形的三个内角之和等于180度。
  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.
• 这个正五边形的每个内角都是108度。
  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.
• 计算多边形的内角需要知道边数。
  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.