Question

tangle.
Q.16 If the angles of a triangle are in the ratio 2:3:4. Find the measure smallest angle of a triangle
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Answer 1

Step-by-step explanation:

$let \: first \: angle =2 x \\ second \: angle = 3x \\ third \: angle \: = 4x$

A/Q

$2x + 3x + 4x = 180 \\ 9x = 180 \\ x = \frac{180}{9} = 20$

$first \: angle = 2x = 2 \times 20 = 40$

$second \: angle = 3x = 3 \times 20 = 60$

$third \: angle = 4x = 4 \times 20 = 80$

Answer 2

Answer:

2 X +3 X + 4 x = 180 degree{sum of angle of a triangle is 180 degree}

5 x + 4 x = 180 degree

x =180 ÷ 9

x=20

2 x = 40

3 x =60

4 x = 80

therefore the sum of smallest angle of the triangle is 40 degree.