Question

1. Make a conjecture given that is an equilateral triangle.

2. Given: A and B are complementary.

Conjecture: mA=45

Find a counterexample.

5. STANDARDIZED TEST PRACTICE. What is the next term in the sequence 1,4,9,16,25?

A. 6

B. 36

C. 40

D. 50

For Questions 2 and 3, complete the converse of the statement If two angles are supplementary and congruent, then they are right angles.

If (Question 2), then they are (Question 3).

2. Complete the following statement.

If AB=BC and A, B, and C are collinear, then B is the of .

For Questions 3-5, name the definition, property, postulate, or theorem that justifies each statement.

3. If x = 2, then 2 = x.

4. If x+3 = y, then x = y-3.

5. If  mA = mB and mB = mC, then mA = mC.