m<y + m<z = 180
Explanation: Since the sum of the interior angles of a quadrilateral is 360 degrees, and the opposite angles of a parallelogram are congruent, then m<y + m<z must equal 180 degrees.
m<y + m<z + m<w + m<x = 360
The sum of the interior angles of a quadrilateral is 360 degrees.
Subtraction property the equality
A quadrilateral with opposite angles congruent is parallelogram.
Simplify (Combine like terms)
choose the correct answer and explain why
1 answer