Postulates/Theorems
Angles
Sides
Proofs
100
State the postulate or theorem that can be used to conclude these triangles are congruent.
SAS
100
By the vertical angles theorem, what two angles are congruent. 
angle BCA and angle DCE
100
If AD is an angle bisector of angle A, what two lines can we say are congruent?
BD=DC
100
What is the reason for statement #1?
Given
200
State the postulate or theorem that concludes these triangles are congruent.
ASA
200
By the Alternate Interior Angles Theorem, what two angles are congruent. 
angles 4 and 5
200
If ED is a perpendicular bisector of line AB, what two sides are congruent. 
AD=DB
200
What is the reason for statement #3?
Definition of a midpoint
300
State the postulate or theorem that concludes these triangles are congruent. 
SSS
300
Assume triangle ABC is congruent to triangle XYZ. What angle is congruent to angle B in triangle XYZ.
angle Y
300
CD is a perpendicular bisector of AB. If AD=12, what does DB equal?
DB=12
300
What is the reason for statement #3?
Definition of bisects
400
State the postulate or theorem that concludes that angle A and angle D are congruent.
Alternate interior angle theorem
400
What is the value of x.
x=137
400
If OM is an angle bisector of angle LMN. What is the value of x.
x=7
400
What is the reason for statement #5?
SSS
500
State the postulate or theorem that concludes angle ACB and angle DCE are congruent. 
Vertical angles theorem
500
What is the value of x.
x=5
500
DB is a perpendicular bisector of AC. Find the value of x.
x=6
500
What is the reason for #5?
SAS