obtuse-angled triangle 钝角三角形
right angled triangle 直角三角形
acute angled triangle 锐角三角形
oblique angled triangle 斜三角形 ; [数] 斜角三角形
right-angled triangle [数] 直角三角形
acute-angled triangle [数] 锐角三角形
altitude of a right-angled triangle 直角三角形的高
right-angled triangle plate 直角三角形板
right angled triangle plate 直角三角形板
In fact, it is a right-angled triangle.
事实上，那是一个直角三角形。
Given the lengths of the two sides of a right-angled triangle, we can find out the length of a third side.
如果晓得直角三角形两个边的长度，咱们就能求出第三边的长度。
The protection appliance has a wedge-shaped fixture block with a side surface similar to a right-angled triangle;
它有一个侧面近似 为直角三角形的楔形卡块；
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