### Home > GB8I > Chapter 5 Unit 6 > Lesson INT1: 5.2.1 > Problem 5-50

5-50.

Calculate the area of the right triangle that has vertices at ,

*, and*

*.*

The area of a triangle can be calculated as

where the base and height must be perpendicular to each other.

Consider graphing the three points and see if you can spot the two sides that are perpendicular.