Question

angle a=105°
angle c=100°
angle d=55°
then, find the angle b?
​

Answer 1

Answer:

b=80°

Explan Step by Step:

Sum of angles of a triangle is 180°

a+b+c+d=180°

105°+b+100°+55°=180°

b+260°=180°

260°-180°=b

80°=b

I hope it's help you

plz like my answers