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Tina correctly calculates the value of x in the diagram using the steps shown.
Step 1: y=180−104
Step 2: x=360−102−38−(180−104)
Step 3: x=144
For which reason is the equation in step 2 true?
A.
The sum of the measures of the angles in a quadrilateral is 360°.
B.
The measure of an angle exterior to an interior angle in a quadrilateral is equal to the sum of the measures of the other interior angles.
C.
The sum of the angle measures x and y is equal to the sum of the measures of the other two angles in the quadrilateral.
D.
The angles with measures y and 104° are supplementary.
Sagot :
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