lululu3614 lululu3614

23-11-2018
Mathematics

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ABCD is a quadrilateral with AD=BC, AB=40, CD=20, and angle A plus angle B equals 90°.

What is the area of quadrilateral ABCD?

Hint: Consider how copies of ABCD can be constructed into another shape.

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xxChiefEricxx xxChiefEricxx

23-11-2018

Is this geometry?? Because if it is then give me a min

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