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13-03-2018
Mathematics

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What is the measure of ∠J in this quadrilateral?

What is the measure of J in this quadrilateral class=

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13-03-2018

180(4-20)=360
∠H=78
∠I=78
∠G=124
so, 360-78-78-124=80
so ∠J must equal 80

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