Understanding Vertical Angles

The video tutorial explains vertical angles, highlighting their congruency and how they relate to each other. It demonstrates marking angles with arcs to show congruency and uses examples to calculate unknown angles. The tutorial also covers the rules of vertical angles, emphasizing that angles across from each other are congruent, while adjacent angles are supplementary, adding up to 180 degrees.

What is the relationship between vertical angles?

• They are always supplementary.

• They are always congruent.

• They are always complementary.

• They are always adjacent.

If one vertical angle measures 120 degrees, what is the measure of its opposite angle?

• 180 degrees

• 90 degrees

• 60 degrees

• 120 degrees

What is the sum of angles on a straight line?

• 90 degrees

• 360 degrees

• 120 degrees

• 180 degrees

What is the rule for angles that are adjacent to each other?

• They are equal.

• They are congruent.

• They are complementary.

• They are supplementary.

Which of the following is true about vertical angles?

• They are always complementary.

• They are always supplementary.

• They are always different in measure.

• They are always equal in measure.

If two angles are adjacent and one measures 60 degrees, what is the measure of the other angle?

• 180 degrees

• 120 degrees

• 90 degrees

• 60 degrees

What is the measure of the angle adjacent to a 120-degree angle on a straight line?

• 60 degrees

• 90 degrees

• 120 degrees

• 180 degrees

Which angles are considered 'across the street' from each other?

• Supplementary angles

• Complementary angles

• Vertical angles

• Adjacent angles