Advertisements
Advertisements
प्रश्न
Construct a tangent to a circle with centre O and radius 3.5 cm at a point P on it.
उत्तर
Steps of construction:-
- Draw a circle with centre O and radius 3.5cm.
- Take any point ‘P’ on the circle and draw ray OP.
- Draw a line perpendicular to ray OP at the point P. Name that line as ‘l’ which is tangent to the circle.
APPEARS IN
संबंधित प्रश्न
In Fig. 7, two equal circles, with centres O and O’, touch each other at X. OO’ produced meets the circle with centre O’ at A. AC is tangent to the circle with centre O, at the point C. O’D is perpendicular to AC. Find the value of `(DO')/(CO')`
In the given figure O is the centre of the circle and AB is a tangent at B. If AB = 15 cm and AC = 7.5 cm. Calculate the radius of a circle.
In Fig. 1, AOB is a diameter of a circle with centre O and AC is a tangent to the circle at A. If ∠BOC = 130°, the find ∠ACO.
In Fig.2, a circle with centre O is inscribed in a quadrilateral ABCD such that, it touches the sides BC, AB, AD and CD at points P, Q, R and S respectively, If AB = 29 cm, AD = 23 cm, ∠B = 90° and DS = 5 cm, then the radius of the circle (in cm.) is:
In Figure 3, a right triangle ABC, circumscribes a circle of radius r. If AB and BC are of lengths of 8 cm and 6 cm respectively, find the value of r.
How many common tangents can be drawn to two circles, touching each
other externally?
A chord of a length 16.8 cm is at a distance of 11.2 cm from the centre of a circle . Find the length of the chord of the same circle which is at a distance of 8.4 cm from the centre.
Find the length of the tangent from a point which is at a distance of 5cm from the centre of the circle of radius 3cm.
In the given figure, O is the centre of the circle. Tangents at A and B meet at C. If angle ACO = 30°, find: angle APB
If PA and PB are two tangents drawn from a point P to a circle with center C touching it A and B, prove that CP is the perpendicular bisector of AB.
In figure, if PQR is the tangent to a circle at Q whose centre is O, AB is a chord parallel to PR and ∠BQR = 70°, then ∠AQB is equal to ______.
The distance between two parallel tangents of a circle of radius 4 cm is ______
In the figure PA and PB are tangents to the circle with centre O. If ∠APB = 60°, then ∠OAB is ______
In the figure, PQ and PR are tangents to a circle with centre A. If ∠QPA=27°, then ∠QAR equals to ______
In the following figure, PA and PB are tangents from a point P to a circle with centre O. Then the quadrilateral OAPB must be a ______
A: What is a line called, if it meets the circle at only one point?
B: Collection of all points equidistant from a fixed point is ______.
- Chord
- Tangent
- Circle
- Curve
- Secant
Which is correct matching?
Prove that the tangents drawn at the ends of a chord of a circle make equal angles with the chord.
Assertion (A): A tangent to a circle is perpendicular to the radius through the point of contact.
Reason (R): The lengths of tangents drawn from an external point to a circle are equal.
In the given diagram RT is a tangent touching the circle at S. If ∠PST = 30° and ∠SPQ = 60°, then ∠PSQ is equal to ______.
In the given figure, AB and AC are tangents to the circle. If ∠ABC = 42°, then the measure of ∠BAC is ______.
