Question

A triangle has sides that measure 3 cm, 4 cm, and 5 cm. What type of triangle is it?

Answer 1

Scalene and right

Explanation:

Since all three sides have different lengths, it is a scalene triangle. But, we must test for a second feature. Using Pythagorus' theorem

`a^2 + b^2 = c^2`

we find `3^2 + 4^2 = 5^2`

9 + 16 = 25

So, these sides also cause it to be a right triangle.