Exploring Missing Angles in Triangles

The video tutorial covers solving for missing angles in triangles, focusing on special angle pairs like supplementary, right, and vertical angles. It includes examples of solving for specific angles using equations and substitution, and a word problem on complementary angles.

What is the sum of supplementary angles?

• 180°

• 360°

• 90°

• 45°

Tags

CCSS.7.G.B.5

What is the measure of a right angle?

• 90°

• 60°

• 45°

• 120°

Tags

CCSS.4.G.A.1

If two angles are vertical, what can be said about their measures?

• They are right angles

• They are equal

• They are supplementary

• They are complementary

Tags

CCSS.7.G.B.5

In the example problem, what is the measure of angle A?

• 20°

• 32°

• 30°

• 26°

Tags

CCSS.7.G.B.5

What is the measure of angle TPV if angle QPV is 115° and they are supplementary?

• 55°

• 45°

• 75°

• 65°

Tags

CCSS.7.G.B.5

If angle QPR is 65°, what is the measure of angle RPS if SPT is a right angle?

• 55°

• 45°

• 35°

• 25°

Tags

CCSS.7.G.B.5

What is the relationship between angles QPR and TPV?

• They are right angles

• They are complementary

• They are vertical

• They are supplementary

Tags

CCSS.7.G.B.5

In the word problem, if one angle is four times larger than the other, what is the measure of the smaller angle?

• 20°

• 22°

• 18°

• 15°

Tags

CCSS.7.G.B.5

What equation represents the relationship between the two complementary angles in the word problem?

• x + x = 90

• 5x = 180

• 4x + x = 90

• 3x = 90

Tags

CCSS.7.G.B.5

How do you solve for x in the equation 5x = 90?

• Divide both sides by 5

• Subtract 5 from both sides

• Multiply both sides by 5

• Add 5 to both sides

Tags

CCSS.6.EE.B.7