### Home > INT1 > Chapter 5 > Lesson 5.1.1 > Problem 5-16

5-16.

On graph paper, plot if

*,*

*,*

*, and*

*.*

*5-16 HW eTool*(Desmos)

If

is rotatedcounterclockwise ( ) about the origin, name the coordinates of the image .On your graph, reflect

across the-axis to find. Name the coordinates ofand. Calculate the area of

. Hint: Divide the figure into rectangles and triangles.Area of a trapezoid

Complete the tables in the eTool below to plot the points, rotate and reflect the shape.

Click on the link at the right to view full version of the eTool: *5-16 HW eTool * (Desmos)