Question

Select all triangles whose side lengths prove they are right triangles. You must select all that apply.

A 5, 9, 6


B 0.5, 1.2, 1.3


C 7, 20, 24


D 3, 4, 5


E 5, 13, 12

Answer 1

B and D

Explanation:

0.5 squared + 1.2 squared = 1.69
`\sqrt{}`1.69 = 1.3

3 squared plus 4 squared = 25
`\sqrt{}`25 = 5

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Answer 2

It is D.

Reason. 3^2 is 9, 4^2 is 16.
16+9= 25
The square root of 25 is 5.
Therefore it is D.