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Jerry has an idea. Since he knows that an isosceles trapezoid has reflection symmetry, he reasons, “That means that it must have two pairs of angles with equal measure.” He marked this relationship on his diagram at right.

Copy the shapes below onto your paper. Similarly, mark which angles must have equal measure due to reflection symmetry.

Isosceles trapezoid with reflection symmetry down the middle such that the left side is a mirror image of the right side. Two sides has 1 tick mark.

  1. Kite showing the two sides with 1 tick mark and two other sides with 2 tick marks. 

  1. Isosceles Triangle showing two sides with 1 tick mark.

  1. Equilateral Triangle showing 3 sides with 1 tick mark

  1. Rhombus showing 4 sides with 1 tick mark.

Draw all lines of symmetry.

Mark the angles that correspond and are on opposite sides of the line of reflection.