# Lesson 2

Let’s look at some special pairs of angles.

### Problem 1

Angles $$A$$ and $$C$$ are supplementary. Find the measure of angle $$C$$.

### Problem 2

1. List two pairs of angles in square $$CDFG$$ that are complementary.

2. Name three angles that sum to $$180^\circ$$.

### Problem 3

Complete the equation with a number that makes the expression on the right side of the equal sign equivalent to the expression on the left side.

$$\displaystyle 5x-2.5 +6x-3 = \underline{\ \ \ \ }(2x-1)$$

(From Unit 6, Lesson 22.)

### Problem 4

Match each table with the equation that represents the same proportional relationship.

(From Unit 2, Lesson 4.)