Is It a Right Triangle or Not

Do the segment lengths 15, 12, and 9 form a right triangle?

• Yes

• No

• Maybe

• Pythagoras

Does the set of numbers represent a right triangle?

• Yes

• No

The Pythagorean Theorem ONLY works on which triangle? 

• obtuse

• scalene

• isosceles

• right

Which are part of a right triangle?

Check all that apply.

• right angle

• radius

• legs

• hypotenuse

• proportion

If the Pythagoras property holds, the triangle must be _____

• right angled

• acute angled

• obtuse angled

This is a right triangle because —

• it is facing the right way

• it has 3 acute angles

• it has one 90 degree angle

• it does not have one obtuse angle

A triangle has sides with lengths of 8 miles, 15 miles, and 17 miles. Is it a right triangle?

• Yes

• No

A triangle has sides with lengths of 7 kilometers, 10 kilometers, and 13 kilometers. Is it a right triangle?

• Yes

• No

A triangle has sides with lengths of 13 meters, 16 meters, and 20 meters. Is it a right triangle?

• Yes

• No

A triangle has sides with lengths of 12 meters, 16 meters, and 20 meters. Is it a right triangle?

• Yes

• No