Question

calcule a medida dos ângulos â, b^,c^ em cada figura

a) losango

b)paralelogramo

Answer 1

a)

a=90

{x+16+90+b=180----x+b=75----b=75-x
{2x+b+90=180------2x+b=90

2x+75-x=90
x=15

b=75-15=60

c=2x=30



b)

2x+6+3x-21+60=180
5x=135
x=27

b=2x+6=2.27+6=60

a=90

c+90+60=180
c=30