Q: How can you tell if a right triangle is a right triangle?

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If it has a 90 degree angle and two acute angles then it is a right angle triangle.

One angle (corner) must to 90 degrees.

One of the angles will be 90 degrees.

No way to tell as we don't know an angle or another side.

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The area

If it has a 90 degree angle and two acute angles then it is a right angle triangle.

23

One angle (corner) must to 90 degrees.

One of the angles will be 90 degrees.

No way to tell as we don't know an angle or another side.

A right triangle is one with a right angle... mean it is 90 degrees and the other two angles are usually both 45 degrees, or 30, and 60 degrees. you can tell by looks if there is a corner to the triangle.

If a triangle has a right angle, it is a right triangle.

If the tree sides of the triangles form a Pythagoras triplet then we can say that the angle opposite to the greatest side is a right angle.

A right triangle is a triangle with a right angle.a right triangle is a triangle with 1 side as a right angle

1. A triangle is a right triangle if and only if it has a right angle. 2. A triangle has a right angle if and only if it is a right triangle.

a right triangle has one right angleA triangle with a right angle is a right triangle.