Question

39 in.15 in.36 in.not drawn to scalescaleneisoscelesequilateralclassify the triangle by its angles.acuterightobtuse

Explanation:

Step1: Classify by side lengths

Check side lengths: 15 in, 36 in, 39 in. All sides are distinct.

Step2: Verify right triangle condition

Use Pythagorean theorem: $15^2 + 36^2 = 225 + 1296 = 1521$, and $39^2 = 1521$. So $15^2 + 36^2 = 39^2$.

Answer:

Classify by sides: Scalene
Classify by angles: Right