Vertical angle
01
垂直角, 対頂角
one of a pair of opposite angles made by two intersecting lines, which are always equal
例
Vertical angles are always congruent to each other.
垂直角は常に互いに合同です。
The theorem stating that vertical angles are equal is a fundamental concept in geometry.
垂直角が等しいという定理は、幾何学における基本的な概念です。
