Advertisements
Advertisements
प्रश्न
The point of concurrence of all angle bisectors of a triangle is called the ______.
पर्याय
Centroid
Circumcentre
Incentre
Orthocentre
Advertisements
उत्तर
The point of concurrence of all angle bisectors of a triangle is called the incentre.
APPEARS IN
संबंधित प्रश्न
A chord of a circle of radius 10 em subtends a right angle at its centre. The length of the chord (in em) is
`(A) 5sqrt 2`
`(B) 10 sqrt2`
`(C)5/sqrt2`
`(D) 10sqrt 3`
Write True or False. Give reason for your answer.
Line segment joining the centre to any point on the circle is a radius of the circle.
Two circles touch externally at a point P. from a point T on the tangent at P, tangents TQ and TR are drawn to the circles with points of contact Q and E respectively. Prove that TQ = TR.
In the given figure, AB is a chord of length 16 cm of a circle of radius 10 cm. The tangents at A and B intersect at a point P. Find the length of PA.

Fill in the blank:
A point whose distance from the centre of a circle is greater than its radius lies in ..................... of the circle.
In fig. 3 are two concentric circles of radii 6 cm and 4 cm with centre O. If AP is a tangent to the larger circle and BP to the smaller circle and length of AP is 8 cm, find the length of BP ?

A quadrilateral is drawn to circumscribe a circle. Prove that the sums of opposite sides are equal ?
In the given figure, AB and CD are diameters of a circle with centre O. If ∠OBD = 50°, find ∠AOC.

In the given figure, seg MN is a chord of a circle with centre O. MN = 25, L is a point on chord MN such that ML = 9 and d(O,L) = 5. Find the radius of the circle.

Find the area of the shaded region in the figure If ABCD is a rectangle with sides 8 cm and 6 cm and O is the centre of the circle. (Take π= 3.14)

Use the figure given below to fill in the blank:
Diameter of a circle is ______.

Use the figure given below to fill in the blank:
EF is a ______ of the circle.

Draw a circle of radius 3.6 cm. In the circle, draw a chord AB = 5 cm. Now shade the minor segment of the circle.
From a point P which is at a distance of 13 cm from the centre O of a circle of radius 5 cm, the pair of tangents PQ and PR to the circle are drawn. Then the area of the quadrilateral PQOR is ______
If the angle between two tangents drawn from a point P to a circle of radius ‘a’ and centre ‘O’ is 90°, then OP = ______
The length of tangent from an external point on a circle is always greater than the radius of the circle.
In the following figure, O is the centre of the circle. Shade sectors OAC and OPB.

From the figure, identify the centre of the circle.
A figure is in the form of rectangle PQRS having a semi-circle on side QR as shown in the figure. Determine the area of the plot.
In the adjoining figure, AC is a diameter of the circle. AP = 3 cm and PB = 4 cm and QP ⊥ AB. If the area of ΔAPQ is 18 cm2, then the area of shaded portion QPBC is ______.

