### Home > A2C > Chapter 2 > Lesson 2.2.1 > Problem 2-129

2-129.

Classify the triangle with vertices ,

*, and*

*by finding the length of each side. Be sure to consider all possible triangle types. Include sufficient evidence to support your conclusion. Homework Help ✎*

Draw slope triangles and use the Pythagorean Theorem. If you need help, review Checkpoint 2A.

This is a scalene triangle. Explain why.