Chapter 12, Lesson 10


12-10.A identify lines of symmetry in two-dimensional figures
Which figure has both vertical and horizontal line symmetry?
(a)
equilateral triangle (b) isosceles trapezoid (c) square (d) parallelogram

12-10.B identify rotational symmetry in two-dimensional figures
Which figure has 60° rotational symmetry?
(a)
regular octagon (b) regular hexagon (c) square (d) equilateral triangle