Geo 9-5

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9-5 Symmetry

Open Ended

Brain dump: What is symmetry?

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Learning Target and Success Criteria

Learning Target

Success Criteria

❏

I can identify line
symmetries in two
dimensional figures

❏

I can identify rotational
symmetries in two
dimensional figures

❏

I will look for lines of
symmetry in a figure

❏

I will see if the figure lines
up with itself after the
symmetry is performed

❏

I will check for rotational
symmetry in the figure

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Line Symmetry

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Real World Example

State whether the object appears to have line symmetry.

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Example 1

State whether the figure has line symmetry. Write yes or no. If yes, draw the
lines of symmetry and state their number

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Example 2

State whether the figure has line symmetry. Write yes or no. If yes, draw the
lines of symmetry and state their number

Multiple Choice

How many lines of symmetry are there on a rhombus?

• 0

• 1

• 2

• 4

Multiple Select

How many lines of symmetry does this figure have?

• None

• Two

• One

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Example 3

State whether the figure has line symmetry. Write yes or no. If yes, draw the
lines of symmetry and state their number

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Learning Target and Success Criteria

Learning Target

Success Criteria

❏

I can identify line
symmetries in two
dimensional figures

❏

I can identify rotational
symmetries in two
dimensional figures

❏

I will look for lines of
symmetry in a figure

❏

I will see if the figure lines
up with itself after the
symmetry is performed

❏

I will check for rotational
symmetry in the figure

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Rotational Symmetry

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Example 4

State whether the figure has rotational symmetry. Write yes or no. If yes,
locate the center of symmetry, and state the order and magnitude of symmetry.

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Example 5

State whether the figure has rotational symmetry. Write yes or no. If yes,
locate the center of symmetry, and state the order and magnitude of symmetry.

Multiple Choice

What is the order and angle of rotation of the flower?

• Order 6, 60 degrees

• Order 4, 90 degrees

• Order 3, 120 degrees

• Order 6, 254 Degrees

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Example 6

State whether the figure has rotational symmetry. Write yes or no. If yes,
locate the center of symmetry, and state the order and magnitude of symmetry.

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Learning Target and Success Criteria

Learning Target

Success Criteria

❏

I can identify line
symmetries in two
dimensional figures

❏

I can identify rotational
symmetries in two
dimensional figures

❏

I will look for lines of
symmetry in a figure

❏

I will see if the figure lines
up with itself after the
symmetry is performed

❏

I will check for rotational
symmetry in the figure