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Mathematics
8. Quadrilaterals
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Q14 of 56 Page 75

Opposite angles of a quadrilateral ABCD are equal. If AB = 4 cm, determine CD.

Given: AB = 4 cm

Since, opposite angles of the quadrilateral are equal, therefore, it is a parallelogram.


Hence, its opposite sides are also equal.


⇒ CD = AB = 4 cm


Hence, CD = 4 cm


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Can all the angles of a quadrilateral be right angles? Give reason for your answer.

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Diagonals of a quadrilateral ABCD bisect each other. If ÐA = 35°, determine ÐB.

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One angle of a quadrilateral is of 108° and the remaining three angles are equal. Find each of the three equal angles.

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ABCD is a trapezium in which AB || DC and ∠A = ∠B = 45°. Find angles C and D of the trapezium.

Questions · 56
8. Quadrilaterals
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