Exploring Right Angles and Straight Angles Theorems

What is the name of the first theorem discussed in the video?

• Congruent Angles Theorem

• Right Angles Theorem

• Straight Angles Theorem

• Parallel Lines Theorem

Tags

CCSS.8.G.A.5

In the Right Angles Theorem, what is the measure of a right angle?

• 90 degrees

• 60 degrees

• 180 degrees

• 45 degrees

Tags

CCSS.4.G.A.1

What is the first step in the five-step proof process?

• Draw a diagram

• Write the conjecture to be proven

• State the given information

• Plan your argument

Which step involves marking the given information on the diagram?

• Step 2

• Step 1

• Step 3

• Step 4

What is the hardest step for many students in an introductory geometry course?

• Drawing the diagram

• Writing the conjecture

• Stating the given information

• Planning the argument and proving the conjecture

Tags

CCSS.HSG.MG.A.1

What is the name of the second theorem discussed in the video?

• Congruent Angles Theorem

• Parallel Lines Theorem

• Right Angles Theorem

• Straight Angles Theorem

Tags

CCSS.HSG.SRT.B.5

In the Straight Angles Theorem, what is the measure of a straight angle?

• 60 degrees

• 180 degrees

• 45 degrees

• 90 degrees

Tags

CCSS.4.MD.C.5B

CCSS.HSG.CO.A.1

What is the conclusion we are trying to prove in the Straight Angles Theorem?

• Angle ABC is a right angle

• Angle DEF is a right angle

• Angle ABC is congruent to angle DEF

• Angle ABC is not congruent to angle DEF

Tags

CCSS.7.G.B.5

What is the reason for stating that the measure of angle DEF is 180 degrees?

• Same as line 2

• Definition of straight angles

• Definition of right angles

• It is given

Tags

CCSS.4.G.A.1

What is the final statement in the proof of the Straight Angles Theorem?

• Angle ABC is not congruent to angle DEF

• Angle ABC is a right angle

• Angle DEF is a right angle

• Angle ABC is congruent to angle DEF

Tags

CCSS.HSG.SRT.B.5