Olympiad Test: Symmetry - Class 7 MCQ

Equilateral Triangle
(all sides equal,
all angles equal)   = = 3 Lines of Symmetry 

Isosceles Triangle
(two sides equal,
two angles equal) == 1 Lines of Symmetry 

Scalene Triangle
(no sides equal,
no angles equal) == No Lines of Symmetry

A parallelogram has zero lines of symmetry.

Equilateral triangle has all sides equal. So there is a line of symmetry from every vertex to the middle of the opposite  side.

A rhombus has 2 lines of symmetry which cuts it into two identical parts. Both the lines of symmetry in a rhombus are from its diagonals. So, it can be said the rhombus lines of symmetry are its both diagonals.

• A square has four lines of symmetry.
• These lines are:


• Two vertical and horizontal lines that cut the square in half.
• Two diagonal lines that connect opposite corners.
• Each line allows the square to be folded over itself perfectly.