Regular prism a prism is called a regular prism if ends are regular polygons.

Triangular prism a prism is called triangular prism if its ends are triangles.

Right triangular prism a right prism is called a right triangular prism if its ends are triangles.

Right prism a prism is called a right prism if its lateral edges are perpendicular to its ends (bases).Otherwise it is said to be an oblique prism.

Isosceles triangle is a regular polygon .

Regular polygon a polygon is called a regular polygon if all its sides are equal and all its angles are equal.

Measurement of each exterior angle of a regular polygon is 45^@ calculate the number of sides of the regular polygon.

Make the following number sequences, from the sequence of equilateral triangles, squares, regular pentagons and so on, of regular polygons: Number of sides

Which is not correct ? (i) Equilateral Delta is a regular polygon (ii) Square is a regular polygon (iii) underline("Rhombus is a regular polygon")