Let’s start an intro unit to Geometry!!

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Presentation transcript:

Let’s start an intro unit to Geometry!! Unit 9 – Geometry Let’s start an intro unit to Geometry!!

Reflections

Reflect across the x-axis B C C’ B’ A’

Reflect across the x-axis Change the sign of the y-value

Reflect across the x-axis

Reflect across the y-axis B’ B C’ C

Reflect across the y-axis Change the sign of the x-value

Reflect across the y-axis

Reflect across y = x B’ A C’ B A’ C

Reflect across y = x Swap x and y

Reflect across y = x

Reflect across y = -x A B C A’ C’ B’

Reflect across y = -x Swap and change both signs

Reflect across y = -x

Rotations

Rotate 90 Clockwise about the Origin (Same as 270 Counterclockwise)

Rotate 90 Clockwise about the Origin (Same as 270 Counterclockwise) Change the sign of x and switch the order

Rotate 90° clockwise about the origin

Rotate 90° clockwise about the origin

Rotate 180 Clockwise about the Origin

Rotate 180 about the Origin ONLY Change the signs

Rotate 180° about the origin

Rotate 180° about the origin

Rotate 270 Clockwise about the Origin (Same as 90 Counterclockwise)

Rotate 270 Clockwise about the Origin (Same as 90 Counterclockwise) Change the sign of y and switch the order

Rotate 270° clockwise about the origin

Rotate 90° counterclockwise about the origin

Reflection: Across x-axis: Across y-axis: Across y = x: Across y = -x:

Rotation: 90 degrees clockwise about the origin: 90 degrees counterclockwise about the origin: 180 degrees about the origin:

Homework Practice Worksheet