7th-8.1 Angle Relationships

Which is a correct name for this angle?

• ∠A

• ∠B

• ∠C

Which is a correct name for this angle?

• ∠ABC

• ∠BCA

• ∠CAB

Which is a correct name for this angle?

• ∠BAC

• ∠ACB

• ∠CBA

This angle could be named ∠1.

• True

• False

This angle could be named ​ (a)   . It is a(n) ​ (b)   angle.

• ∠E
• right
• ∠D
• ∠F
• acute
• obtuse

One name for this angle would be ​ (a)   . It is a(n) ​ (b)   angle.​

• ∠GHI
• acute
• ∠HIG
• ∠IGH
• right
• obtuse

Classify each angle.

• acute angle

• 
• straight angle

• 
• right angle

• 
• obtuse angle

• 

∠7 and ∠12 are ____.

• adjacent angles

• vertical angles

• neither

∠8 and ∠11 are ____.

• adjacent angles

• vertical angles

• neither

∠7 and ∠10 are ____.

• adjacent angles

• vertical angles

• neither