Algebraic Solutions for Angles

Angles and Algebra!

Open Ended

Let's refresh: Solve this problem and tell what you did step by step.

Fill in the Blank

Vertical angles are congruent. So the angle with the ? should be _____________ degrees.

Vertical Angles

Vertical angles are congruent. So this is how we would set up a problem like this. What would we get for the answer. Let's take it to the white board.

Multiple Choice

Complementary angles add up to 90 degrees. Find the missing angle.

• 27

• 17

• 13

• 107

Complementary angles with algebra

If we know that complementary angles add up to 90? How would we set up and solve this problem? Let's take it back to the white board?

Multiple Choice

Supplementary angles add up to 180. What should x be?

• 28

• 108

• 180

• 62

Supplementary angles with algebra

If we know supplementary angles add up to 180, how would we set up and solve this problem? Let's take it back to the white board!