1. From any external point of a circle, a maximum of _____ tangents can be drawn to the circle.
2. Prove that two tangents can be drawn from any external point to a given circle.
3. No tangent can be drawn to a circle from an external point.
4. No of tangent can be drawn to a circle from an external point-
(a) 1 (b) 3 (c) 4 (d) 2
5. From an external point, a maximum of _____ tangents can be drawn to a circle.
6. The maximum number of tangents that can be drawn to a circle from an external point is _____.
7. From a point outside a circle, two tangents can be drawn. The line segments joining the external point to the points of contact of the tangents are equal in length, and they subtend equal angles at the center of the circle.
8. In a circle with center O, a tangent PT is drawn from an external point P to the circle, with T being the point of tangency. If PT = 12 cm and OP = 13 cm, the diameter of the circle will be:
(a) 5 cm (b) 8 cm (c) 6 cm (d) 10 cm
9. The angle formed between the two tangents drawn from an external point to a circle is bisected by the straight line segment connecting that point to the center of the circle.
10. A tangent is drawn from an external point A to a circle centered at O, touching the circle at point B. Given: OB=5 cm, AO=13 cm, Find the length of AB.
(a) 12 cm (b) 13 cm (c) 6.5 cm (d) 6 cm
11. From a point outside a circle, a tangent of length 8 cm is drawn to the circle. If the radius of the circle is 6 cm, what is the distance from the center of the circle to the external point?
(a) 10 cm (b) 8 cm (c) 6 cm (d) 14 cm
12. From an external point located 17 cm away from the center of a circle with a diameter of 16 cm, what is the length of the tangent drawn to the circle?
13. More than two tangents can be drawn to a circle that are parallel to a given straight line.
14. Prove that the two tangents drawn from an external point to a circle are equal in length from the point to the points of contact on the circle.
15. Prove that the two tangents drawn to a circle from an external point are equal in length, and the line segments joining the points of contact to the external point subtend equal angles at the center of the circle.
16. If two circles do not intersect or touch each other, then a maximum of _____ common tangents can be drawn between them.
17. From an external point \(A\), two tangents are drawn to a circle centered at \(O\), touching the circle at points \(B\) and \(C\) respectively. Prove that the line \(AO\) is the perpendicular bisector of the line segment \(BC\).
18. Point P is an external point to a circle with center O. The distance from point P to the center of the circle is 26 cm, and the length of the tangent drawn from point P to the circle is 10 cm. The radius of the circle is ____ cm.
19. From an external point P, two tangents PA and PB are drawn to a circle centered at O. If PA = 9 cm and ∠APB = 60°, then what are the measures of ∠PAB and the length of chord AB?
(a) 9 cm (b) 3 cm (c) 6 cm (d) 12 cm
20. From an external point \(P\), two tangents \(PA\) and \(PB\) are drawn to a circle centered at \(O\). Given \(PA = 9\) cm and \(\angle APB = 60°\), find the length of \(AB\).
21. If a circle has a radius of 5 cm and a tangent is drawn from an external point \(P\) to the circle with a length of 12 cm, what is the distance from the center to point \(P\)?
22. From an external point \(P\), a tangent is drawn to a circle centered at \(O\), touching the circle at \(R\). Given \(OR = 15\) cm and \(PR = 8\) cm, find \(OP\).
(a) 17 cm (b) 7 cm (c) 23 cm (d) 20 cm
23. The two tangents drawn from an external point to a circle are unequal.
24. If two circles neither intersect nor touch each other, a maximum of 4 common tangents can be drawn.
25. Prove that from an external point to a circle, the two tangents drawn are equal in length, and the line segments connecting the external point to the points of contact form equal angles at the center.
26. From an external point \(A\), two tangents are drawn to a circle centered at \(O\), touching the circle at points \(B\) and \(C\) respectively. Prove that the line \(AO\) is the perpendicular bisector of the chord \(BC\).
27. A semicircle is drawn with AB as the diameter. From any point C on AB, a perpendicular is drawn to AB, which intersects the semicircle at point D. Prove that CD is the mean proportional between AC and CB.
28. From an external point \(A\), two tangents \(AP\) and \(AQ\) are drawn to a circle centered at \(O\), touching the circle at points \(P\) and \(Q\) respectively. If \(PR\) is a diameter of the circle, prove that \(OA \parallel RQ\).
29. We have drawn two circles with centers \(A\) and \(B\), which touch each other externally at point \(C\). A point \(O\) lies on the common tangent at point \(C\), and tangents \(OD\) and \(OE\) are drawn from point \(O\) to the circles centered at \(A\) and \(B\), touching them at points \(D\) and \(E\) respectively. It is given: - \(\angle COD = 56^\circ\) - \(\angle COE = 40^\circ\) - \(\angle ACD = x^\circ\) - \(\angle BCE = y^\circ\) We are to prove: - \(OD = OC = OE\) - \(x - y = 4^\circ\)
30. From an external point A of a circle, two tangents AB and AC are drawn, touching the circle at points B and C respectively. A tangent is drawn at point X, which lies on the arc BC, and it intersects AB and AC at points D and E respectively. Prove that the perimeter of triangle ∆ADE = 2 × AB.
