Given:

Question

XYZ is located on the coordinate plane

Y measures 54 degrees

If the triangle is reflected across the y-axis to form
X'Y'Z', what is the measure of
Y' ?
27 degrees
36 degrees
54 degrees
126 degrees

Answer 1

When a triangle is reflected across the y-axis, the positions of the points change, but the angles of the triangle remain the same. Therefore, the measure of angle Y' will be the same as the measure of angle Y.

Since angle Y measures 54 degrees, angle Y' will also measure 54 degrees.

So, the answer is: 54 degrees.