Question

The sides of a triangle are of length 8 cm, 15 cm and 17 cm. Then this triangle is a right triangle.

• A. True
• B. False

Answer 1

The correct option is A True

We know that hypotenuse is the longest side. If 8 cm, 15 cm and 17 cm are the lengths of a triangle, then 17 cm will be the hypotenuse.
${17}^2=289$ and
$(8{)}^2+(15{)}^2=64+225=289$
Here, 17² = 8² + 15²
Hence, by the converse of Pythagoras theorem, the given triangle is a right triangle.