One angle of a triangle is 3 times smallest angle and half of the greatest angle
One angle of a triangle is 3 times smallest angle and half of the greatest angle 
Triangle A two dimensional closed shape with three sides and three vertices.
 A triangle is comprised of 3 sides, 3 vertices, and 3 angles.
 The sum of three interior angles of a triangle is always 180degree.
 The sum of two sides (length) of a triangle is always greater than the length of the third side.
 The area of a triangle is equal to the half of the product of its base and height.
We know the sum of three interior angles of a triangle is=180°.
 Here we can consider the smallest angle is x°.
 3 times of smallest angle=3x°.
 The angle which is 3 times of the smallest angle is half of the greatest angle=3x°.
 Greatest angle is= 6x°.
Now we know the sum of triangle=180°.
We can apply x°+3x°+6x°=180°.
ð 10x°=180°.
= > x°=180°/10=18°.
= > 3x°=3*18=54°.
= > 6x°=6*18°=108°.
If we want to know the angles, then
 Three angles of this triangles are 18°, 54°, and 108°.
 According to angles we can tell it is obtuse angle.
Solved Question

1. How many cones are there in a triangle? Or we can say how many angles are there in a triangle?
AnswerThere are three angles in a triangle.