Question

10. An Exterior angle of a triangle is 110° and one of its interior opposite angles is
45°, then the other interior opposite angle is
11. State and prove Angle Sum Property of Triangle.​

Answer 1

Answer:

10. exterior angle = sum of interior opposite angles

=> 110° = 45° + another interior oppose angle

=> 110° - 45° = another opposite interior angle

=> 55° is the required angle

Answer 2

Answer:

65

Step-by-step explanation:

An exterior angle of a triangle

One of its interior opposite angle

Other interior opposite angle

Let it be

In a triangle,

An exterior angle sum of its opposite interior angles

110 = 45 + x

x = 110 - 45

x = 65