Symmetry - 1

What is a line of symmetry?

• A line that indicates the direction of movement.

• A line that represents the perimeter of a shape.

• A line that connects two points on a shape.

• A line that divides a shape into two identical mirror-image halves.

Identify the lines of symmetry in a square.

• 2 lines of symmetry

• 8 lines of symmetry

• 4 lines of symmetry

• 1 line of symmetry

Draw the lines of symmetry for an equilateral triangle.

• The lines of symmetry are only one line from the center to a vertex.

• The lines of symmetry are drawn from the midpoints of each side to the opposite vertex.

• The lines of symmetry for an equilateral triangle are the three lines drawn from each vertex to the midpoint of the opposite side.

• An equilateral triangle has no lines of symmetry.

How many lines of symmetry does a rectangle have?

• 4

• 3

• 2

• 1

Determine if a circle has lines of symmetry and explain.

• No, a circle has only one line of symmetry.

• Yes, a circle has two lines of symmetry.

• Yes, a circle has infinite lines of symmetry.

• A circle has lines of symmetry only at the diameter.

Identify the lines of symmetry in a regular pentagon.

• 4 lines of symmetry

• 6 lines of symmetry

• 5 lines of symmetry

• 3 lines of symmetry

What is rotational symmetry?

• An object has rotational symmetry if it can be mirrored along a line.

• An object has symmetry if it can be folded in half.

• An object has rotational symmetry if it looks the same after a certain amount of rotation.

• An object has rotational symmetry if it can be stretched without changing shape.

A square will NOT be Rotationally Symmetrical if rotated by an angle of?

• 90 degrees

• 360 degrees

• 45 degrees

• 180 degrees

Determine the angle of rotation for a regular hexagon.

• 45 degrees

• 60 degrees

• 90 degrees

• 120 degrees

Classify a shape with no lines of symmetry.

• Square

• Equilateral triangle

• Scalene triangle

• Rectangle