70. (1) ABCD is a rectangle with angle BAC=40^° . determine angle DBC. (2) PQRS is a parallelogram in which angle SPQ=65^° and angle SQR=50^° .find the measure of angle RSQ and angle PSQ. (3) In the adjoining figure, PQ=PS and RQ=RS. If angle QPO=30^° , angle RSO=55^° .find the measure of angle a,angel b,angel c,angel d and angel e.

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∠ R S Q

∠ S P Q = 70^{o}

∠ R Q S = 60^{o}

∠ A B C = 70^{o}

(i)

∠ D G C

(i i)

∠ D E F

∠ D A B = 70^{o}

∠ D B C = 65^{o}

∠ C D B

The measure of two adjacent angles of a parallelogram in the ratio of $3 : 2$ find the measure of each angel.

If $A B C D$ is a rectangle with $∠ B A C = 32^{\circ},$ find the measure of $∠ D B C .$

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