So in simplest form it would be 1/4
9. What is the formula to find the sum of the interior angles for any polygon?
1 answer:
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So in simplest form it would be 1/4
<h2>○=> <u>Correct option</u> :</h2><h2>
</h2><h3>○=> <u>Steps to derive correct option</u> :</h3>
Sum of all angles in a quadrilateral = 360°
Given :
▪︎Measure of angle U in quadrilateral RSTU = 80°
We know that corresponding angles in a quadrilateral are equal.
Which means :
▪︎Angle U = Angle y
Thus, the measure of angle y = 80°
Angle T = angle x (corresponding angles of a quadrilateral are equal)
Let us name angle T and angle x together as 2x.
Which means :
Thus, the measure of angle x = 100°
Therefore, the correct option is <em>(a) y = 80, x = 100</em>