NAME ______________________________ DATE _______________

DAILY PRACTICE

Mirror Symmetry

For each figure that has mirror symmetry, draw the line(s) of symmetry.

  • 1 A ladybug with two dots on each wing. A dotted line is drawn from the head between each wing.

  • 2

    A shape made of four rows of triangles. d
  • 3 A house with a chimney on one side.

  • 4 A rectangle.

  • 5

    A shape made of four rows of triangles. d
  • 6 An apple cut in half from top to bottom with a seed on each side.

  • 7

    A shape made of smaller shapes. d
  • 8 A four-pointed star with equal sides.

  • 9 On triangle paper, draw a design that has mirror symmetry. You may color it if you like. How many lines of symmetry does your design have?

Ongoing Review

  • 10 In which shape is the dotted line a line of symmetry?

    • A An octagon with opposite sides equal. A dotted line extends through the center from the top left to the bottom right. The line creates two equal parts with different orientations.

    • B A right triangle. A dotted line extends from the 90-degree angle to straight across to the hypotenuse. The line creates a small triangle and a large triangle.

    • C An oval. A dotted line runs across the top third of the oval. The line creates a small part and a large part.

    • D An equilateral rhombus. A dotted line extends through the center from one vertex to the opposite vertex. The line creates two equal parts.

NOTE

Students identify and draw designs that have at least one line of symmetry.

MWI Mirror Symmetry


End ofPage 239

Table of Contents

Investigations 3 in Number, Data, and Space®, Student Activity Book Unit 1 Arrays, Factors, and Multiplicative Comparison Unit 2 Generating and Representing Measurement Data Unit 3 Multiple Towers and Cluster Problems Unit 4 Measuring and Classifying Shapes Unit 5 Large Numbers and Landmarks Unit 6 Fraction Cards and Decimal Grids Unit 7 How Many Packages and Groups? Unit 8 Penny Jars and Towers