The internal bisectors of $\angle Q$and $\angle R$ of triangle PQR meet at O. If $\angle P $= $70^{0}$, then what is the measure of $\angle QOR$ (in degrees)?
The internal bisectors of $\angle Q$and $\angle R$ of triangle PQR meet at O. If $\angle P $= $70^{0}$, then what is the measure of $\angle QOR$ (in degrees)?
1). 110
2). 115
3). 125
4). 135
1 answers
Other Questions
1. In $\triangle ABC$,$\angle B $= $60^{0}$ and $\angle C$ = $40^{0}$. If AD and AE be respectively the internal bisector of $\angle A$ and perpendicular on BC, then the measure of $\angle DAE$ is
2. If the sum of the interior angles of a regular polygon is 1260°, then how many sides does it have?
3. ABCD is a cyclic quadrilateral, CD is the diameter of the circle. If ∠ BCD = 60°, the measure of ∠BAD is
4. Find the difference between the sum of the interior angles and the sum of the exterior angles of a regular heptagon.
5. If the sum of interior angles of a regular polygon is equal to two times the sum of exterior angles of that polygon, then the number of sides of that polygon is
6. ABCD is a cyclic parallelogram. The angle $\angle B$ is equal to :
7. ABCD is a cyclic trapezium whose sides AD and BC are parallel to each other. If $\angle ABC$ = $72^{0}$, then the measure of the $\angle BCD$ is
8. PQ is the chord of a circle whose centre is O. ROS is a line segment originating from a point R on the circle that intersect PQ produced at point S such that QS = OR. If ∠QSR = 30°, then what is the value (in degrees) of POR?
9. Find the approx. area of a trapezium ABCD in which AB || DC, AB = 10 cm, BC = 10cm, CD = 26 cm and DA = 10 cm.
10. In triangle ABC, $\angle ABC$ = $90^{0}$. BP is drawn perpendicular to AC. If $\angle BAP$ = $50^{0}$, then what is the value (in degrees) of $\angle PBC$?
