what kind of triangle has a 90 degree angle

A triangle that has a 90 degree angle is called a right triangle.

Quick Scoop

• A 90 degree angle is called a right angle , so any triangle containing exactly one 90 degree angle is a right triangle.

• The other two angles in a right triangle must be less than 90 degrees and together add up to 90 degrees, since all three angles in a triangle total 180 degrees.

In short: if you spot a 90° angle inside a triangle, you are looking at a right triangle.

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