The length of a chord which is at a distance of 12 cm from the center of a circle of radius 13 cm is 

If angle bisector of a triangle bisects the opposite side, then what type of triangle is it?

If ABC is an equilateral triangle and P, Q, R respectively denote the middle points of AB, BC, CA, then 

If AD, BE and CF are medians of ∆ABC, then which one of the following statements is correct? 

In a ∆ABC ∠A : ∠B : ∠C  = 2 : 3 : 4 . A line CD drawn || to AB, then the ∠ACD is: 

P and Q are center of two circles with radii 9 cm and 2 cm respectively, where PQ = 17 cm, R is the center of another circle of radius x cm, which touches each of the above two circles externally. If ∠PRQ = 90 °, then the value of x is 

What is the length of the radius of the circumcircle of the equilateral triangle, the length of whose side is 6√3 cm?

Inside a square ABCD, triangle BEC is an equilateral triangle. If CE and BD intersect at O, then ∠BOC is equal to?