In quadrilateral ABCD, A=40°, B=110°,C=70°,find the measure of d
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Answered by
1
Answer:
140
Step-by-step explanation:
formula to find the measure of a side of a quadrilateral is
angle a + angle b + angle c + angle d = 360
40 +110+70+angle d =360
220+angle d = 360
angle d =360 -- 220
angle d = 140
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