Question

9. The three angles of a triangle are in the ratio 1:2:1. Find all the angles of the triangle

Answer 1

Answer:

45, 90, 45

Step-by-step explanation:

Total measure of angles in a triangle = 180°

So, 180 / 4 = 45

2 * 45 = 90

Answer 2

Step-by-step explanation:

The ratio of three angles =1:2:1

let 1x+2x+1x be the three angles

by angled sum property, we have

=1x+2x+1x=180°

=4x = 180°

$= x = \frac{180°}{4} = 45°$

=1×45°=45°

=2×45°=90°

=1×45°=45°

.°. three angles are 45°:90°:45° = 1 : 2 : 1

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