A triangle has sides with lengths of 5 meters, 9 meters, and 13 meters. Is it a right triangle?

No.

Step-by-step explanation:

It is a right triangle if it satisfies the Pythagorean theorem.

The theorem states that:

We have:

Therefore:

And we can see that

Therefore it is not a right triangle.

answer: i'm not going to give you the answer, but some hints to work it out.

step-by-step explanation: so, if there is a straight line that means that the line angle is 180°. so we subtract the 2 angle measures provided, (15 and 38) from 180. so the answer is 180 - (38 + 15). (you have to solve the equation)

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step-by-step explanation: