Question

One angle of a triangle is twice the smallest and the other angle is thrice the smallest.
measures of all the angles in degree are?.

• A. 45,45,90
• B. 70,30,100
• C. 30,60,90
• D. 40,80,60

Answer 1

Answer: (C)

30,60,90

Let the smallest angle $=x$

So other angles are $2x$ and $3x$

Using angle sum property of triangle

$x+2x+3x={180}^{\circ }6x={180}^{\circ }x={30}^{\circ }$

So the angles are

$x={30}^{\circ }2x=2\times {30}^{\circ }={60}^{\circ }3x=3\times {30}^{\circ }={90}^{\circ }$