Which of the following is surely a regular polygon?
Triangle
Square
Rectangle
Parallelogram
A square has all 4 sides equal. Hence it is a regular polygon.
In the figure, PINT is a rectangle. A right-angled triangle SIP is cut from the rectangle and pasted at the other end to form a quadrilateral SING. Which of the following is surely the quadrilateral SING?
State the number of lines of symmetry for the following figures:
(a) An equilateral triangle
(b) An isosceles triangle
(c) A scalene triangle
(d) A square
(e) A rectangle
(f) A rhombus
(g) A parallelogram
(h) A quadrilateral
(i) A regular hexagon
(j) A circle