Geometric Reflections

What is a reflection?

• When you turn an object around a point.
• When you slide an object form one place to another.
• When you flip or mirror an object across a line.
• When you resize an object.

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

State the line of reflection.

• Reflection across y-axis
• Reflection across x-axis
• Reflection across x = 1
• Reflection across y = 1

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

What is the Algebraic Notation for this Reflection?

• (x, y) → (y, x)
• (x, y) → (-x, y)
• (x, y) → (-y, -x)
• (x, y) → (x, -y)

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

If A(2,5) was reflected over the Y-AXIS, what would the coordinated of A' be?

• A'(2,-5)

• A'(-2,5)

• A'(5,2)

• A'(5,-2)

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

A line that acts as a mirror so that corresponding points are the same distance from the mirror.

• line of rotation
• line of reflection
• line of dilation
• line of translation

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Triangle GHI is reflected across the x-axis.  What are the coordinates of I'?

• (-2, 6)
• (2, 6)
• (-6, -2)
• (6, 2)

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Is this a reflection over the X-axis or Y-axis

• X axis

• Y axis

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Is the reflection shown a reflection over the x or y axis?

• X axis

• Y axis

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5