Respuesta :
Answer:
the opposite Angles sum up to give 180
Step-by-step explanation:
3y +3y = 180
y=30
if y = 30 the x = 55
are you clear?
Answer:
3y+3y=180°{sum of opposite angle of parallelogram are supplementary}
6y=80
y=180/6
y=30°
again,
4y-65+x=180°{ sum of of opposite angle of parallelogram are supplementary }
4×30-65+x=108
x=180-55
x=125
so to make quadrilateral as parellogram
- 3y=3y
- 3×30=3×30
- 90°=90°