Question

(b) PQRS is a rhombus.
find b and a​

Answer 1

PQRS is a rhombus , so angle s + angle r = 180

                  = 110 + 2a =180

       = 2a = 70 (angle r)

   a = 35 degree

angle p = angle r (opposite angles )

2b - 4  = 2a (2a = 70)

2b - 4  = 70 (angle P)

2b = 74

b = 37 degree

Answer 2

Step-by-step explanation:

2b-4+2a=110+110

2b+2a-4=220

b+a=112

Also 2b-a=2a

2b=3a

b=3a/2

Substitute this value

3a/2+a=112

5a=224

a=44.8

b=67.2