When preparing for Geometry class, Matt labeled a right triangle. Matt’s teacher told him that he made some mistakes. What is one mistake that matt made ?

Vertices (or angles) are labeled with Capital letters

Step-by-step explanation:

Angles are labeled with Capital letters.

The sides themselves can be labeled with lowercase letters, but the vertices of the  triangles must be labeled with Capital letters

1010: 3030

is it i think

step-by-step explanation:

no, her answer is not correct.   we square the lengths of all sides and then determine whether the pythagorean theorem holds here:

9² + 15² = 306.   this is not equal to the square of the longest side ( that square being 395.   answer c is correct.