Question

http://prntscr.com/2s5a17

Answer 1

in a parallelogram opposite sides r parallel....
so since rhombus ABCD is also an parallelogram
CB is parallel to AD
there for
angle CBA = angle BAD
26 = b ( alternate angles)

Answer 2

in triangle ABC
AB =AC ( 4 sides of a rhombus r equal )
so...
triangle ABC is isosceles
angle CBA = angle CAB = 26

therefore
angle CBA + angle CAB + a = 180 ( sun of interior angle of a triangle)
26 + 26 + a = 180
a = 180 - 52
= 128

got it :) ?

Answer 3

Would be a :)