Question

Does the measurement of other two angles change by changing the measurement of one of the three angles? Try by drawing and testing various triangles and fill in the blanks :

Name of Triangle	Angle
∆ABC	∠A= 50°, ∠B = 60°, ∠C = 70°
∆ABC	∠A= 30°, ∠B = …°, ∠C = …°
∆ABC	∠A= 100°, ∠B = …°, ∠C = ..°

Answer 1

Yes, on changing any angle of a triangle, the measures of other angles change. It is cleared in table:

Name of Triangle	Angle
∆ABC	∠A= 50°, ∠B = 60°, ∠C = 70°
∆ABC	∠A= 30°, ∠B = 120°, ∠C = 30°
∆ABC	∠A= 100°, ∠B = 50°, ∠C = 30°