Using a linear pair to solve for the missing variable ex 18

The video tutorial explains the angle relationships in two intersecting lines, focusing on vertical angles and linear pairs. It describes how vertical angles share a vertex but not sides, while linear pairs form a straight line and are supplementary. The tutorial demonstrates solving for a missing angle using the linear pair property, showing that the angles add up to 180 degrees.

What is a common angle relationship found in intersecting lines?

• Vertical angles

• Parallel angles

• Complementary angles

• Adjacent angles

Which of the following is true about a linear pair of angles?

• They add up to 90 degrees

• They are equal in measure

• They add up to 180 degrees

• They are always acute angles

If two angles form a linear pair, what can be said about their relationship?

• They are adjacent

• They are congruent

• They are supplementary

• They are complementary

How do you solve for a missing variable in a linear pair equation?

• Add the angles and set them equal to 90 degrees

• Subtract the angles from 180 degrees

• Multiply the angles by 2

• Add the angles and set them equal to 180 degrees

What is the value of X if X + 2X equals 180 degrees?

• 30 degrees

• 45 degrees

• 60 degrees

• 90 degrees