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In Fig. ∠PQR = ∠PRQ, then prove that ∠PQS = ∠PRT
Assertion: The measure of angle y is 65°. Reason: Straight line extended an angle of 180°.
In Fig. 6.9, lines PQ and RS intersect each other at point O. If ∠ POR : ∠ ROQ = 5 : 7, find all the angles.
In Fig. 6.13, lines AB and CD intersect at O. If ∠ AOC + ∠ BOE = 70° and ∠ BOD = 40°, find ∠ BOE and reflex ∠ COE.
In Fig. 6.2, POQ is a line. The value of x is
Let OA, OB, OC and OD are rays in the anticlockwise direction such that ∠AOB = ∠COD = 100°, ∠BOC = 82° and ∠AOD = 78°. Is it true to say that AOC and BOD are lines?
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