Two lines AB and CD cut each other at O. If ∠AOC = 50°, the ∠BOC = ?

PQ is a chord in the minor segment of a circle and R is a point on the minor arc PQ. The tangents at the points P and Q meet at the point T. If ∠PRQ =102°, then the measure of ∠PTQ is :

In △ABC, AB = AC = 12 cm, BC = 5 cm and D is a point on AC such that DB = BC. What is the measure of CD?

Which of the following statements is wrong ?

In the following table two columns are given. Match column A with column B.

How many lines of symmetry does the figure have?

Some statements are given about lines of symmetry.

(a) Equilateral triangle has 3 lines of symmetry.

(b) Circle has 2 lines of symmetry.

(c) An isosceles triangle has two lines of symmetry.

(d) A rectangle has two lines of symmetry.

(e) Letter A has one line of symmetry.

Which of the following option correctly describes all the above?

Which of the following statements is false?

A parallelogram is a quadrilateral in which:

In a quadrilateral ABCD, a line segment BD is a diagonal such that AB=CD and ∠ABD=∠CDB. Are the triangles ABD and CDB congruent? If so, by what rule?

A right-angled triangle has a hypotenuse of 13 cm and one leg of 5 cm. A second right-angled triangle is similar to the first, and its hypotenuse is 39 cm. What is the area of the second triangle?