Q2 of 56 Page 78

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


Since it is an isosceles trapezium.


We know,


Angles opposite to each other in quadrilateral are supplementary.






Similarly,






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14

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

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The angle between two altitudes of a parallelogram through the vertex of an obtuse angle of the parallelogram is 60°. Find the angles of the parallelogram.

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ABCD is a rhombus in which altitude from D to side AB bisects AB. Find the angles of the rhombus.