# geometry

Mr.soto drew a design for a quilting pattern. The design is made up of 5 congruent isosceles trapezoids as shown below. What is the measure, in degrees, of angle y?

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1. Do you really think we can see this (with our crystal ball)?

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2. •find the measure of one of the interior angles
180(3)/5 =108
•y is NOT the exterior angle
•use the formula:
360-a=2y
*where a= the measurement of 1 of the interior angles which is 108 in this case.
•so it would be:
360-108=2y
252=2y
252/2=y
126=y
•so y=126

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