Question

Pls answer the following:

Answer 1

Answer:

1. 45

2. 140°

3. The exterior angle should be 100°

Answer 2

Answer:

1) We know that,if a side of a triangle is produced then the exterior angle formed is the sum of the two interior opposite angles of the given triangle

that is if one interior angle is 25,let the other be x

25+x=70

x=70-25

x=45°

2) Given two interior opposite angles are 60° and 80°

We know that,if a side of a triangle is produced then the exterior angle formed is the sum of the two interior opposite angles of the given triangle

that is the we've to find the sum of these two given angles

80+60=x

x=140°

therefore the exterior angle so formed=140°

3) Yes, there's an error,as the exterior angle so formed= 50°, but the interior angles are 50 and 50 respectively,if 50 & 50 are the interior opposite angles,then the exterior so formed should be of 100°,as it's already mentioned in the property of exterior angle

hope it helps