Question

if two angles of a triangle are of measure 60 degree and 20 degree than the third angle will be measure​

Answer 1

Answer:

100°

Explanation:-

We know that the sum of angles of a triangle is 180 °.

So here ,

Let there is a triangle with angles A,B and C .Then given ,

Angle A = 60 °

Angle B = 20°

Angle C = ?

Now on using Angle sum property of triangle we get ,

A + B + C = 180 °

60 ° + 20° + C = 180°

80° + C = 180°

C = 180 - 80 = 100°

Answer 2

Here the measure of two angles of a triangle is given: 60° and 20°

We have to find the measure of the third angle.

We know that the sum of all three angles of a triangle is 180°

Now, let us assume the third angle to be 'x'

Then , x + 60° + 20° = 180°

                           x  = 180 - 80

                            x = 100 °

So, the third angle will be 100°