Lines of symmetry of an equilateral triangle

Line of symmetry

(i)How many lines of symmetry does an equilateral triangle have? (ii)What is the order of rotational symmetry of an equilateral triangle?

Area of an equilateral triangle

Discuss the rotational symmetry and line symmetry of an equilateral triangle.

Which of the following has only 2 lines of symmetry? (a) Equilateral triangle (b) Rhombus (c) Circle (d) None of these

Which of the following has an infinite number of lines of symmetry? (a) Equilateral triangle (b) Isosceles triangle (c) Regular hexagon (d) Circle

The order of rotational symmetry of an equilateral triangle is (a) 0 (b) 1 (c) 2 (d) 3

Perimeter of an equilateral triangle.

Which of the following statements are true and which are false ? (i) A parallelogram has no line of symmetry. (ii) An angle with equal arms has its bisector as the line of symmetry (iii) An equilaterla triangle has three lines of symmetry. (iv) A rhombus has four lines of symmetry. (v) a square has for lines of symmetry. (vi) A rectangle has two lines of symmetry. (vii) Each one of the letters H,I,O,X of the English alpabet has two lines of symmetry.

Lines of symmetry of an isosceles triangle