9th Maths 10.1

Exercise 10.1

Q1. Fill in the blanks:

i) The centre of a circle lies in ____ of the circle. [exterior/ interior]

ii) A point, whose distance from the centre of a circle is greater than its radius lies in ____ of the circle. [exterior/interior]

iii) The longest chord of a circle is a ____ of the circle.

iv) An arc is a ____ when its ends are the ends of a diameter.

v) Segment of a circle is the region between an arc and ____ of the circle.

vi) A circle divides the plane, on which it lies, in _____ parts.

Answer:

i) Interior,

ii) Exterior,

iii) Diameter,

iv) Semicircle,

v) The chord,

vi) Three.

Q2. Write True or Fales: Give reasons for your answers.

i) Line segment joining the centre to any point on the circle is a radius of the cricle.

ii) A circle has only finite number of equal chords.

iii) If a circle is divided into three equal arcs, each is a major arc.

iv) A chord of a circle, which is twice as long as its radius, is a diameter of the circle.

v) Sector is the region between the chord and its corresponding arc.

vi) A circle is a plane figure.

Answer:

i) True,

ii) False,

iii) False,

iv) True,

v) False,

vi) True.