A right triangle(直角三角形) is a triangle two of whose sides(边) are perpendicular.
举一反三
- 1933 （）提出病害三角学说(Disease Triangle)
- What are the two types of Yongding earthen houses? A: square B: round C: triangle
- The Bermuda Triangle seems to form a triangle between ______, ______, and the ocean east of Puerto Rico.
- What can the structure of discussion and conclusion section be thought of as?( ) A: a square B: an upright triangle C: an inverted triangle
- The three main components of the fraud triangle are: