Proving Vertical Angles Are Equal

What is the main goal of the video?

• To show how to draw vertical angles

• To prove that vertical angles are equal

• To measure different types of angles

• To explain the concept of supplementary angles

Tags

CCSS.7.G.B.5

Which points are used to label the intersecting lines?

• L, M, N, O, P

• P, Q, R, S, T

• A, B, C, D, E

• X, Y, Z, W, V

Tags

CCSS.HSG.CO.A.1

What is the notation used for the angle CBE?

• Angle ABC

• Angle CBE

• Angle EBD

• Angle DBC

What does it mean for two angles to be supplementary?

• Their measures add up to 180 degrees

• They are adjacent angles

• Their measures add up to 90 degrees

• They are equal in measure

Tags

CCSS.7.G.B.5

Which angles are supplementary in the given problem?

• Angle DBC and angle EBD

• Angle DBA and angle CBE

• Angle CBE and angle DBA

• Angle CBE and angle DBC

Tags

CCSS.7.G.B.5

What is the result of subtracting angle DBC from both sides of the equation involving angle CBE?

• Angle CBE is equal to 180 degrees

• Angle CBE is equal to angle DBA

• Angle CBE is equal to angle DBC

• Angle CBE is equal to 180 degrees minus angle DBC

Tags

CCSS.7.G.B.5

What is the final conclusion about angle CBE and angle DBA?

• They are complementary

• They are equal

• They are adjacent

• They are supplementary

Tags

CCSS.7.G.B.5

How are vertical angles sometimes shown in diagrams?

• With a single line

• With a double line

• With a dotted line

• With a shaded area

Tags

CCSS.8.G.A.5

What is the significance of using colors in the proof?

• To make the diagram look attractive

• To differentiate between different angles

• To show the measure of angles

• To indicate the type of angles

Tags

CCSS.8.G.A.5

What does the proof demonstrate about vertical angles in general?

• They are always supplementary

• They are always adjacent

• They are always equal

• They are always complementary

Tags

CCSS.7.G.B.5