Geo Midterm Unit 4 Review

(x, y) -------> (x, -y) is a reflection over the x axis.       

• True
• False

(x,y) -------> (-x, -y) is a reflection over the y = x axis.

• True 
• False

Tags

CCSS.8.G.A.1

CCSS.8.G.A.2

CCSS.8.G.A.3

(x, y) -------> (x - 3, y) is a translation of 3 units to the left.   

• True
• False

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

(x, y) -------> (-y, -x) is a rotation of 90 degrees counterclockwise.  

• True 
• False

Tags

CCSS.8.G.A.1

CCSS.8.G.A.3

A dilation with a scale factor of 2 is a reduction. 

• True
• False

Tags

CCSS.8.G.A.3

CCSS.8.G.A.4

Which transformation is not a rigid transformation?

• Translation
• Reflection
• Rotation
• Dilation

Tags

CCSS.8.G.A.1

CCSS.8.G.A.2

CCSS.8.G.A.3

CCSS.8.G.A.4

C(-6, 2) and B(-1, -1)
Reflect over the line y = x

• C' (-6, 2), B' (-1, -1)
• C' (6, 2), B' (1, -1)
• C' (2, -6), B' (-1, -1)
• C' (-6, -2), B' (-1, -1)

Tags

CCSS.8.G.A.1

CCSS.8.G.A.2

CCSS.8.G.A.3

A(-2, 2) and B(3, 2)

Dilate k = 2

• A' (-1, 1), B' (1.5, 1)

• A' (-4, 4), B' (6, 4)

• A' (2, -2), B' (-3, -2)

• A' (2, -2), B' (2, 3)

A(-2, 2) and B(3, 2)

Dilate k = -1

• A' (-2, 2), B' (3, 2)

• A' (-4, 4), B' (6, 4)

• A' (2, -2), B' (-3, -2)

• A' (2, -2), B' (2, 3)

Identify the transformation.

• Reflection across y-axis
• 90 Rotation counter clockwise
• Translation 5 units left, 1 unit up.
• Translation 5 units right, 1 unit down

Tags

CCSS.HSG.CO.A.2