Question

Question 2 (iv)
Consider the following parallelograms. Find the values of the unknowns x,y,z
(iv)

Answer 1

(iv) $z={80}^{\circ }$ [Corresponding~angles]
$x+{80}^{\circ }={180}^{\circ }$ [Adjacent angles in a parallelogram are supplementary]
$\Rightarrow x={180}^{\circ }-{80}^{\circ }={100}^{\circ }$
Also, $y={80}^{\circ }$ [Opposite angles are equal in a parallelogram]