Question

(
2. Find the unknown angles in the given triangles
(
80°
Х
y​

Answer 1

Step-by-step explanation:

According to the theorem of triangles angles

opposite to equal sides are also equal

so,

b=40°

According to angle sum property of the triangle,

b+40+a=180°

40°+40°+a=180°

a=100°

thus,

a=100°

b=40°