Question

3. Two angles of a triangle are 60° and 70°. Find the third angle.​

Answer 1

Answer:

50°

Step-by-step explanation:

Sum of all 3 interior angles of a triangle is 180°

Let the third angle be x°

==> 60° + 70° + x° = 180° ==> x = 180° - 130° = 50°

Answer 2

Answer:

If it is 1. right angled triangle

sum of three angles is 180°

given is 70°

other is 90°

remaining is 180°-(70°+90°)= 20°

The value of three angles are 70°, 90°,20°

If it is 2.isosceles triangle

sum of three angles is 180°

given is 70° let other angles be x°, x° as they are equal

remaining is 180°-70° = 110°

2 (x°)=110°

x= 110° / 2 =55°

The value of three angles are 70°, 55°,55°

If it is any other type triangle two sides and one of included angle OR vice versa required to find out missing parameter.