Since reflecting over the z-axis does not change the x-coordinate (side ST) of the vertices, the measure of side ST will remain the same after reflecting over the z-axis.
Therefore, the measure of side ST is 9.
So the correct answer is 9.
Quadrilateral Q is reflected over the z-axis to form Q' and then over the y-axis to form
Q". What is the measure of side ST?
9
7
10
8
1 answer