Quarterly 2 Extra Practice

Match the rules for the following transformations.

• (-x, y)

• Rotate 270 degrees

• (-x, -y)

• Reflect over x-axis.

• (-y, x)

• Reflect over y-axis

• (x, -y)

• Rotate 90 degrees

• (y, -x)

• Rotate 180 degrees

T(-5, 2), O(-1,4), and M(-3,0).

Rotate these points 90 degrees.

• T'(2, -5), O'(4, -1), and M'(0, -3)

• T'(-2, 5), O'(-4, 1), and M'(0, 3)

• T'(-2, -5), O'(-4, -1), and M'(0, -3)

• T'(2, 5), O'(4, 1), and M'(0, 3)

Starting with T(4, -3), perform the following composition of transformations:

1) rotate 180 degrees 2) reflect over the x-axis 3) translate (x + 1, y - 1)

put the coordinates in order. I didn't label them with ' and '' because I didn't want to give the answer away.

• (-4, 3)

• (-3, -4)

• (-4, -3)

Answer explanation

Remember a composition means go one after the other, don't go back to the original coordinates.

The following are shortcuts you can use to prove that two triangles are congruent: ​ (a)   ​ (b)   ​ (c)   ​ (d)   ​ ​ ​ (e)  

hint: quizizz will only accept them in the order we learned them, so think!

• SSS
• SAS
• ASA
• AAS
• HL
• SSA
• AAA
• CPCTC

Answer explanation

Quizizz will only take the answers in this order for some reason:

SSS

SAS

ASA

AAS

HL

So if you put those but just not in the right order, then you're still right! :)

Determine which postulate can be used to prove the triangles are congruent.

• SSS

• ASA

• HL

• SAS

Determine which postulate can be used to prove the triangles are congruent.

• SSS

• ASA

• SSA

• SAS

Determine which postulate can be used to prove the triangles are congruent.

• SSS

• ASA

• AAS

• SAS

Solve for x.

• 180 degrees

• 50 degrees

• 60 degrees

• 70 degrees

Solve for x.

• 50 degrees

• 65 degrees

• 180 degrees

• 80 degrees

Solve for x.

• 60 degrees

• 70 degrees

• 20 degrees

• 50 degrees