7.     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

(a) An equilateral triangle

The number of lines of symmetry  = 3

(b) An isosceles triangle

The number of lines of symmetry  = 1

(c) A scalene triangle

The number of lines of symmetry  = 0

(d) A square

The number of lines of symmetry  = 4

(e) A rectangle

The number of lines of symmetry  = 2

(f) A rhombus

The number of lines of symmetry  = 2

(g) A parallelogram

The number of lines of symmetry  = 0

The number of lines of symmetry  = 0

(i) A regular hexagon

The number of lines of symmetry  = 6

(j) A circle

The number of lines of symmetry  = infinite

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