Question

Figure PQRS is a parallelogram. The expressions represent the measures of the angles in degrees.

Answer 1

we know that

In a parallelogram consecutive angles are supplementary

In this problem

Angle Q and Angle R are consecutive angles

so

$(6x)\°+(20+2x)\°=180\°$

Solve for x

$8x=180-20$

$8x=160$

$x=20\°$

therefore

the answer is the option C

$x=20\°$

Answer 2

I hope this helps you



Q and R complimentary



6x+20+2x=180



8x=160



x=20