Exploring Angle Types and Pairs

This video lesson by Kirk Weiler covers Unit 9, Lesson 3 on angle types and pairs. It begins with an introduction to angles, explaining their significance and how they are measured. The lesson then delves into different types of angles, including right, acute, obtuse, and straight angles, and provides exercises to identify them. The video also explores the combination of geometry and algebra to solve problems, followed by an introduction to angle pairs such as adjacent, complementary, and supplementary angles. The lesson concludes with exercises on angle pairs and a summary of the key concepts.

What is the common starting point of two rays called?

• Line

• Degree

• Angle

• Vertex

How many degrees are in a full rotation?

• 180

• 360

• 90

• 270

Which type of angle measures exactly 90 degrees?

• Right

• Straight

• Acute

• Obtuse

What is the measure of an obtuse angle?

• Exactly 90 degrees

• Less than 90 degrees

• Exactly 180 degrees

• More than 90 degrees but less than 180 degrees

Which angle type is described as 'sharp'?

• Straight

• Right

• Acute

• Obtuse

In the given diagram, which angle is a right angle?

• MRN

• PMN

• QMN

• RMP

If angle A is a right angle and its measure is given by 8x + 2, what is the value of x?

• 12

• 13

• 11

• 10

What do we call two angles that share a common ray?

• Complementary

• Supplementary

• Vertical

• Adjacent

Which pair of angles add up to 90 degrees?

• Supplementary

• Vertical

• Complementary

• Adjacent

If angle ABE is 40 degrees, what is the measure of angle EBD?

• 40 degrees

• 50 degrees

• 90 degrees

• 140 degrees