In the parallelogram ABCD, ab = 4 √ 6cm, ad = 4 √ 3cm, a = 45 ° find the diagonal and area of the parallelogram The area is 48

According to Pythagorean theorem, in the right triangle ade, if de = 2 √ 6cm, then area = AB * de = 48
Connecting dB, according to the three lines of isosceles triangle, we can prove that abd is isosceles triangle, so DB = 4 √ 3cm

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