Question

Two angles of a triangle are the same size. The third angle is 12 degrees smaller than the first angle. Find the measure the angles

Answer 1

Answer:12, 84 and 84

Step-by-step explanation:

since we  know 3 angles of a triangle = 180 degrees

1 angle = 12 degrees

12 + x + x = 180

12 + 2x = 180

2x= 180 - 12

2x = 168

x = 168/2

x = 84 degrees

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Answer 2

Answer:

64° , 64° , 52°

Step-by-step explanation:

Angle sum property of triangle:

       The two angles that are same be 'x'

        Third angle = x  - 12

Sum of all angles of triangle = 180

                      x + x + x -12      = 180

                                   3x - 12 = 180

                                          3x = 180 + 12

                                          3x = 192

                                             x = 192/3

                                             x = 64

x - 12 = 64 - 12

         = 52

The three angles are  64° , 64° , 52°