Measure and Classify Angles

Which pair of angles is an example of alternate interior angles?

Calculate the missing angle.

• 110º

• 107º

• 73º

• 117º

In this picture, two parallel lines are cut by a third line, called a transversal. How many vertical angle pairs can you find?

• 2 pairs of vertical angles

• 3 pairs of vertical angles

• 4 pairs of vertical angles

• 8 pairs of vertical angles

In this picture, two parallel lines are cut by a third line, called a transversal. What is the maximum number of Linear Pairs of angles you can find?

• 2 Linear Pairs

• 4 Linear Pairs

• 6 Linear Pairs

• 8 Linear Pairs

• Sweet!

• Cool.

• Right on.

So, if m∠2+m∠4=180° and m∠6=m∠2, we can substitute to get this equation:  m∠6+m∠4=180°.  Conclude

Calculate the missing angle.

• 110º

• 80º

• 70º

• 60º

Calculate the missing angle.

• 132º

• 58º

• 48º

• 38º