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Sagot :
Answer:
diagonals bisect each other equally in rectangle
then use the concept of vertically opposite angles
Answer:
x = 120
Step-by-step explanation:
Since the lines are intersecting the the rectangle from the corner we know the angles are all congruent in some way.
now: ( look at image for labels)
angle a is also 60 because both side are equivilent
since all triangles are 180 degrees we can find the measure of angle b
60 + 60 + b = 180
angle b = 60
and since we know two angles created by intersecting lines are supplementary angles the sums add up to 180 so
60 + x = 180
x = 120
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