Question

ABCD is a parallelogram with AD= 8cm BM perpendicular AD, BM = 11.4 CM​

Answer 1

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it is in attachment

Answer 2

Step-by-step explanation:

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Given ABCD is parallelogram, AB=8cm,AD=4cm,∠B=120°

a. ∠B=∠D=120° (opposite angles equal)

∠A+∠C=360° −(120° +120°)

=360−240=120°

$∴∠A=∠A=∠C= \frac{120}{2} \\ = > 60</p><p> \\ ∴A=60$

b. Draw DE as perpendicular from D to AB. From the figure.

$DE=2 \sqrt{3cm} .[1: \sqrt{3} :2]$

c. The are of ABCD=bh (formula)

$=> 8 × 2 \sqrt{3} \\ \tt \blue{ = > \sqrt{3} {cm}^{2} }$

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