Question

third questions answer with full explanation​

Answer 1

Step-by-step explanation:

1st picture is a parallelogram

Sum of opposite angles is 180 degrees

105+ 75= 180

so 1st one is parallelogram

2nd picture is also parallelogram

Because opposite sides are equal

PS = QR and PQ=RS

2nd picture is also a parallelogram

3rd picture is not a parallelogram

Because for parallelogram

OX = OZ and OY= OT

but here in this picture OX is not equal to OZ

and OY is not equal to OT