Question

the measure of the angle of triangle are 10 degree 30 degree find the third angle​

Answer 1

• let the third angle be X.
• as we know the sum of the internal angles of a triangle is 180 degree.......

10 + 30 + X = 180

therefore, the third angle , X = 140 .

Answer 2

Answer:

140°

Step-by-step explanation:

Measure of 1st angle = 10°

Measure of 2nd angle = 30°

Measure of 3rd angle =180°-10°+ 30°

= 180° - 40°

= 140°