Question

In the quadrilateral ABCD shown in the figure 10.10, angle 1=angle 2= 90° IS AD || BC? Justify your answer. A 2 B. Fig. 10.10​

Answer 1

Answer:

yes because here the angle of any pair of interior angle on the same side are supplementary

we have angle 1=angle 2=90 then

angle 1+angle 2=180 and for a closed figure of 4 sides sum of all angles =360 and sum of the two angles is 180