Question

20. The angles of a triangle are
in the ratio 2: 3: 7. The measure
of largest angle is
*​

Answer 1

Step-by-step explanation:

Let the angles be x

1st angle = 2x, 2nd angle = 3x and 3rd angle = 7x

Using angle sum property:

2x + 3x + 7x = 180°

12x = 180°

x = 180°/12

x = 15°

So, 1st angle = 2x = 2×15° = 30°

2nd angle, = 3x = 3×15° = 45°

3rd angle = 7x = 7×15° = 105°