### Home > CC4 > Chapter 3 > Lesson 3.3.2 > Problem 3-129

3-129.

Plot Δ*ABC* on graph paper if *A*(6, 3), *B*(2, 1), and *C*(5, 7). 3-129 HW eTool (Desmos) Homework Help ✎.

Δ

*ABC*is rotated about the origin 180° to become Δ*A*′*B*′*C*′. Name the coordinates of*A*′,*B*′, and*C*′.This time Δ

*ABC*is rotated 180° about point*C*to form Δ*A*″*B*″*C*″. Name the coordinates of*B*″.If Δ

*ABC*is rotated 90° clockwise (↻) about the origin to form Δ*A*′′′*B*′′′*C*′′′, what are the coordinates of point*A*′′′?

Use the eTool below to graph and rotate triangle *ABC*.

Click the link at right for the full version of the eTool: Int1 3-129 HW eTool