Unit 7 Review

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

• True
• False

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

• True
• False

(x, y) -------> (-x, -y) is a rotation of 180 degrees.  

• True 
• False

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

• True 
• False

C(-6, 2) and B(-1, -1)
Rotate 90 degrees counterclockwise.

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

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

A(-2, 2) and B(3, 2)
Rotate 180 degrees 

• A' (-2, 2), B' (3, 2)
• A' (-2, -2), B' (-3, -2)
• A' (2, -2), B' (-3, -2)
• A' (2, -2), B' (2, 3)

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

A(-2, 2) and B(3, 2)
Reflect over the x-axis 

• A' (-2, 2), B' (3, 2)
• A' (-2, -2), B' (3, -2)
• A' (2, -2), B' (-3, -2)
• A' (2, -2), B' (2, 3)

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

C(-6, 2) and B(-1, -1)
Translate (x, y) -> (x + 3, y - 1)

• C' (-3, 1), B' (2, -2)
• C' (3, -1), B' (-2, -4)
• C' (-9, 1), B' (-4, -2)
• C' (-7, 1), B' (-2, -2)

Tags

CCSS.HSG.CO.A.2

Are these triangles congruent?

• Yes, by ASA
• Yes, by SAS
• Yes, by AAS
• No, this is the SSA one!!

Are these triangles congruent?

• Yes, by SSS
• Yes, by SAS
• Yes, by ASA
• No, this is the SSA one!!