Question

lessons no 5 Quadrilaterals practise set 5.1 std 9 answers​

Answer 1

Answer:

< - (it is a sing of angle)

so begin with fisrt sum

(1) <xyz =135

<xyz=<xwz.... (opposite angle of parallelogram)

<xwz= 135

<xyz + <yzw =180....(adjacent angle of a parallelogram)

135+<yzw =180

<yzw=180 - 135

<yzw =45