If the exterior angle of a regular polygon is 18 ∘ 18^\circ 1 8 ∘ , then find the number of diagonals in this polygon.

ΔABC is inscribed in a circle with centre O. If the sides of the triangle are $AB = 21 \text{ cm}$, ...

If the areas of two similar triangles are in the ratio $121 : 225$, what would be the ratio of the c...

ABCD is a quadrilateral with diagonal $BD = 70 \text{ cm}$. Perpendiculars from vertices $A$ and $C$...

In a circle centered at $O$, a diameter $AB$ is extended to a point $C$ outside the circle. If $CD =...

In a circle centered at $O$, a diameter $AB$ is extended to a point $C$ outside the circle. $CD$ is ...

In a circle with centre $O$, an arc $ABC$ subtends an angle of $134^ ext{o}$ at the centre of the ci...