# Reflecting a Triangle in a Coordinate Plane

- Author:
- Vincent Tran

**1.**Draw a triangle with vertices at

*A*(-3, 3)

*B*(-2, -1), and

*C*(-1,4).

**a.**

*Reflect*ABC in the

*y*-axis to form A'B'C'

**b.** What is the relationship between the coordinates of the vertices of triangle ABC and those of triangle A'B'C'?

**c.** What do you observe about the side lengths and angle measures of the two angles?

**2.**Draw a triangle with vertices at

*A*(-3, 3)

*B*(-2, -1), and

*C*(-1,4).

**a.**

*Reflect*ABC in the

*x*-axis to form A'B'C'

**b.** What is the relationship between the coordinates of the vertices of triangle ABC and those of triangle A'B'C'?

**c.** What do you observe about the side lengths and angle measures of the two angles?