Question

(c) The centre of the circle lies on its diameter.
(d) Each arc of a circle is a semi-circle.
true or false?​

Answer 1

c) true. (all centre of the circle lie on its diameter.)

d) false. (each semi-circle is an arc)

Answer 2

Answer:

c) true

d) false.

Step-by-step explanation:

c) diameter is a chord which divides the circle into two equal hemispheres and centre is the point from where the circle is drawn. So , ofcourse the centre will lie on diameter.

d) Though a semicircle is an arc, but it's not necessary that every arc has to be a semicircle. Arc is of two types :

1. Major arc ( greater than semicircle)
2. Minor arc ( smaller than semicircle.)