Triangles Based on Angles

Q. The triangle has angles in ratio 2 : 3 : 4. Classify the triangle.

1. Scalene acute angled triangle
2. Isosceles obtuse angled triangle
3. Isosceles right angled triangle
4. Scalene Obtuse angled triangle

Q. In a triangle, if one of its angles is 95° with 2 of its sides equal to 4 cm, then it is called angled triangle.

1. isosceles acute
2. isosceles obtuse
3. scalene obtuse
4. equilateral right

Q.

A triangle with following angles is possible :-

1. 2 acute angles and 1 right angle

2. 3 acute angles

3. 2 right angles and an acute angle
4. 1 obtuse angle and 2 acute angles

Q. Classify the following triangles according to angle:

Q. Which of the following triangles is/are classified on the basis of angles?

1. Acute angled triangle
2. Scalene triangle
3. Equilateral triangle
4. Obtuse angled triangle

Q.

If the angles of a triangle are 30°, 30° and 120°, then the triangle is ___.

1. an acute angled triangle

2. an obtuse angled triangle

3. a right angled triangle

4. a equilateral triangle

Q. In a right-angled triangle, one of the angles must be equal to __.

1. 145 degrees
2. 180 degrees
3. 90 degrees
4. 120 degrees

Q.

Which of the following triangles are isosceles as well as obtuse-angled triangles?

1. Fig 1 and Fig 3 only

2. Fig 1, Fig 2 and Fig 4 only

3. Fig 1, Fig 2 and Fig 3 only

4. Fig 2 and Fig 3 only

Q. The angles of a triangle measure ${40}^{\circ }$, ${110}^{\circ }$ and ${30}^{\circ }$. Such a triangle is called a/an _____.

1. isosceles triangle
2. right angled triangle
3. obtuse angled triangle
4. acute angled triangle

Q. An equilateral triangle is also ____ triangle.

1. a scalene
2. a right-angled
3. an obtuse angled
4. an acute angled

Q.

A triangle whose two angles measure ${25}^{\circ }$ and ${35}^{\circ }$ is ___ triangle.

1. an obtuse angled

2. an acute angled

3. an equilateral

4. a right angled

Q. $\text{Which of the following is correct about}\text{the}△ABC?$

1. Isosceles
2. Equilateral
3. Acute
4. Scalene