Circle
Exercise 10.1
Question: 1 - How many tangents can a circle have?
Answer: Infinitely many
Since, the circumference of circle is composed of infintely many points, hence a circle can have infinitely many tangents.
Question: 2 - Fill in the blanks:
- A tangent to a circle intersects it in ………………..points (s).
Answer: One - A line intersecting a circle in two points is called a …………………
Answer: Secant - A circle can have ………….parallel tangents at the most.
Answer: Two - The common point of a tangent to a circle and the circle is called ………………..
Answer: Point of contact
Question: 3 - A tangent PQ at a point P of a circle of radius 5 cm meets a line through the centre O at a point Q so that OQ = 12 cm. Length of PQ is:
- 12 cm
- 13 cm
- 8.5 cm
- √119 cm
Answer:(d) √119 cm
Question 4: Draw a circle and two lines parallel to a given line such that one is a tangent and the other a secant to the circle.
Answer:
