Q 1 : The set of points in a plane which are at a fixed distance from a fixed point is called a ______. circle centre
Q 2 : The number of excircles that can be drawn for a triangle is _____. 3 1
Q 3 : The diameter which is ____ to a chord of a circle bisects the chord. chord perpendicular
Q 4 : The perpendicular drawn from the centre of a circle to a chord of it _____ the chord. bisects chord
Q 5 : The incentre of an obtuse angled triangle lies in the ______ of the triangle. exterior interior
Q 6 : The circumference of a circle is ______ times the diameter 2 pi
Q 7 : The point of a concurrence of the perpendicular bisectors of the sides of a triangle is called ____. circumcenter ortho centre
Q 8 : The point of concurrence of altitudes of a triangle is called _____. ortho centre circumcenter
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