How do you know if a triangle is a right triangle? The definition is very simple and might even seem obvious for those who already know it: a right-angled triangle is **a triangle where one and only one of the angles is exactly 90°**. The other two angles will clearly be smaller than the right angle because the sum of all angles in a triangle is always 180°.

## Can these side lengths make a triangle?

SOLUTION: The sum of the lengths of any two sides of a triangle **must be greater than the length of the third side**. Since , you can not form a triangle with side lengths 9.9 cm, 1.1 cm, and 8.2 cm. ANSWER: No; The sum of the lengths of any two sides of a triangle must be greater than the length of the third side.

## Does 8 15 17 make a right triangle?

Yes, 8, 15, 17 is a **Pythagorean Triple and sides** of a right triangle.

## Can a triangle be 5 6 9 lengths?

So,We can make a triangle with these sides.

## Which Cannot be sides of a triangle?

The **measurements 1, 2, 3** cannot be the sides of the triangle.

## Related faq for How Do You Know If A Triangle Is A Right Triangle?

Does 6/8 11 make a right triangle?

1 Expert Answer

So, (6,8,11) is not a right triangle as the hypotenuse is too long.

Is a triangle with sides of 8 15 and 17 a right triangle?

Yes, 8 , 15 and 17 could be the measures of the sides of a right angled triangle.

Is a triangle with sides 6 8 and 10 a right triangle?

A triangle has sides of lengths 6, 8, and 10 is a right triangle.