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.

State the line of reflection.

• Reflection across y-axis

• Reflection across x-axis

• Reflection across x = 1

• Reflection across y = 1

What is the Algebraic Notation for this Reflection?

• (x, y) → (y, x)

• (x, y) → (-x, y)

• (x, y) → (-y, -x)

• (x, y) → (x, -y)

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)

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

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

• (-2, 6)

• (2, 6)

• (-6, -2)

• (6, 2)

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

• X axis

• Y axis

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

• X axis

• Y axis