Question

One of the equal angles of an isosceles triangle is 80°. Find the
measure of the third angle.​

Answer 1

Answer:

20°

Step-by-step explanation:

180°-(80°+80°)

=180°-160°

=20°

Answer 2

Answer:

ATQ

one of the angle is isosceles = 80°

that means other angle is 80°

so let the third angle be X

so

80°+80°+x=180°

160°+x=180°

x = 180-160

x =20°