9. Polygons & Quadrilaterals

Consider the quadrilateral in the adjacent figure.

a

Find the value of the angle marked $y$`y`.

b

Find the value of the angle marked $x$`x`.

c

Complete:

The sum of the interior angles of a quadrilateral is $\editable{}$°.

Easy

Approx 3 minutes

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Identify and/or use properties of regular polygons