Triangle and Sum of Its Internal Angles

Q.

Find the value of X in the figure below:

1. 70

2. 80

3. 90

4. 60

Q. In $\Delta PQR$, the angle bisectors of $\angle PQR$ and $\angle PRQ$ meet at O.

If $\angle QPR={80}^{\circ }$, find the measure of $\angle QOR$

1. ${80}^{\circ }$
2. ${130}^{\circ }$
3. ${100}^{\circ }$
4. ${90}^{\circ }$

Q.

Sum of the interior angles of a triangle is ___.

1. 90

2. 180

3. 360

4. 135

Q.

Find the value of X in the given figure:

1. 120

2. 30

3. 60

4. 0

Q.

Angles of a triangle are in the ratio 2 : 4 : 3. The smallest angle of the triangle is

1. 40^o

2. 30^o

3. 60^o

4. 80^o

Q.

If one angle of a triangle is equal to the sum of the other two angles which are equal, then the triangle is a/an _________ .

1. Right angled triangle

2. Acute angled triangle

3. Obtuse angled triangle

4. Equilateral triangle

Q.

Sum of interior angles of a triangle is ___.

1. 180${}^{\circ }$

2. 90${}^{\circ }$

3. 360${}^{\circ }$

4. 135${}^{\circ }$

Q.

In the figure given below, if lines PQ and RS intersect at point T, such that,
$\angle PRT={40}^{\circ }$, $\angle RPT={95}^{\circ }$ and $\angle TSQ={75}^{\circ }$, then find $2\angle SQT$.

1. None of the above

2. ${120}^{\circ }$

3. ${150}^{\circ }$

4. ${80}^{\circ }$

5. ${90}^{\circ }$

Q. In fig. $\angle ABP=\angle ACQ,\angle BAC={68}^{\circ }$. Measure of $\angle ABC$ is:

1. ${124}^{\circ }$
2. ${56}^{\circ }$
3. ${52}^{\circ }$
4. ${60}^{\circ }$

Q.

In the adjoining figure, the value of $\angle A+\angle B+\angle C+\angle D+\angle E+\angle F$ in degrees is

___