Question

(8) The measures of two angles of a triangle are 60° and 40°, find the
measure of the third angle.
​

Answer 1

Answer:

80 degree

Step-by-step explanation:

sum of all angles is 180 degree

60 plus 40 plus x equals to 180

100 plus x equals to 180

x equals to 180 minus 100

Answer 2

1. st angle is 40°
2. nd angle is 60°
3. rd angle =120°-(60°+40°)
4. 120°-100° =20 °
5. so, third angle is 20 °