Transformations
Unknown Angles
Triangle Congruence
Vocab etc
100
What type of rigid transformation is this?
Translation
100
Find the measure of the unknown angle
47o
100
Does Side-Side-Angle prove two triangles are congruent?
No
100
Two angles that add to 180o are called this
Supplementary
200
What type of rigid transformation is this?
Rotation
200
Find the measure of the unknown angle: 
65o
200
Write a congruency statement for the following
triangle DEF is congruent to triangle TSR
200
a and b are an example of this
Vertical angles
300
Why is a dilation not a rigid transformation?
Rigid transformations do not change the size of the object.
A dilation results in growing or shrinking.
300
Find the measure of the ? angle:
80o
300
Which triangle congruence criteria proves these triangles are congruent?
ASA
Angle-Side-Angle
300
What do we call a math fact that has been proven?
A theorem
400
Describe a composition of transformations that would carry the blue shape onto the green shape (you may want to use the red shape as an intermediate step, but you do not have to)
One possibility: Translate the blue shape up 2 and right 3. Then reflect the result over the x-axis
400
Find the value of y
y = 124
400
Which triangle congruence criterion proves that these are congruent?
SAS
400
What do we call a math fact we haven't proven, but have to assume is true?
A postulate
500
If I construct the perpendicular bisector between a point and its image, what have I made? (Remember, the category is transformations)
The line of reflection
500
Find the value of x:
x = 149
500
If we knew one more pair of corresponding parts were congruent, we could prove triangle ABC is congruent to triangle ADC.
What is that pair? 
*Actually, there are 2 possibilities
angle BAC congruent to angle DAC
or
BC = DC
500
What is the property that says something equals itself?
Reflexive property