Reflections and Translations Practice

Front

What is the algebraic representation of translating a figure 3 units left and 5 units down?

Back

(x-3, y-5)

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

What is a reflection in geometry?

Back

A reflection is when you flip or mirror an object across a line.

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

What is a rigid motion?

Back

A rigid motion is a transformation that preserves size and shape.

Tags

CCSS.HSG.CO.B.6

Front

What is the mirror line for the reflection of a point across the line y=x?

Back

The mirror line is y=x.

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

How do you translate point P to P' if you move it 2 units to the right and 8 units down?

Back

The new coordinates of P' will be (x+2, y-8).

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

What is the effect of translating a figure on its size and shape?

Back

Translating a figure does not change its size or shape.

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

What is the general formula for translating a point (x, y) by (a, b)?

Back

The new coordinates will be (x+a, y+b).

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

What is the difference between a reflection and a rotation?

Back

A reflection flips an object over a line, while a rotation turns an object around a point.

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

What happens to the coordinates of a point (x, y) when it is reflected over the x-axis?

Back

The new coordinates will be (x, -y).

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

What is the result of reflecting a point (x, y) over the y-axis?

Back

The new coordinates will be (-x, y).

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5