Question

5 properties of a circle

Answer 1

1.When a circle is rotated through any angle about its centre, its orientation remains the same.

2.When any straight line is drawn through its centre, it divides the circle into two identical semicircles.

3.The line is known as the diameter.

4.The common distance of the points of a circle from its centre is called radius.

5.The perimeter or length of the circle is also known as the circumference.

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Answer 2

1. circle having different radii are similar
2.circles having equal radii are congruent
3.the radius perpendicular to a chord bisects the cord
4.The central angle which intercepts an arc is the double of any inscribed angle that intercepts the same arc
5.A tangent to a circle is at a right angle to the radius at the point of contact

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