Question

Find the third angle of the following

Answer 1

Answer:

1 . x = 50°

2. x = 60°

3. x = 30° ; 2x = 60° ; 3x = 90 °

4. x = 40°

1) Sum of three angles of a Triangle = 180°

50 ° + 80° + x = 180°

130° + x = 180°

x = 180° - 130°

x = 50°

2. Sum of three angles of a Triangle = 180°

x + 60° + 60° = 180°

x + 120° = 180°

x = 180° - 120°

x = 60°

3. Sum of three angles of a Triangle = 180°

x° + 2x° + 3x° = 180°

6x = 180°

x = 180 / 6

x = 30°

2x = 2 ( 30 ) = 60°

3x = 3 ( 30 ) = 90°

4. Sum of three angles of a Triangle = 180°

40° + 100° + x = 180°

140° + x = 180°

x = 180° - 140°

x = 40°