夹角 (jiá jiǎo) — included angle; the angle between two lines or planes

Definition

Examples

• 两条直线相交形成夹角。
  Liǎng tiáo zhí xiàn xiāng jiāo xíng chéng jiá jiǎo.
  Two straight lines intersecting form an included angle.
• 这个三角形的夹角是60度。
  Zhè ge sān jiǎo xíng de jiá jiǎo shì 60 dù.
  The included angle of this triangle is 60 degrees.
• 我们需要测量这两个平面的夹角。
  Wǒ men xū yào cè liáng zhè liǎng gè píng miàn de jiá jiǎo.
  We need to measure the angle between these two planes.