Ch13 Angles on a Straight Line (Easy)

Define Obtuse Angle

• Less than 90

• Exactly 90

• Greater than 90 and less than 180

• Exactly 180

Answer explanation

An obtuse angle is defined as an angle that is greater than 90 degrees but less than 180 degrees, making the correct choice 'Greater than 90 and less than 180'.

Tags

CCSS.4.G.A.1

Define Acute Angle

• Less than 90

• Exactly 90

• Greater than 90 and less than 180

• Exactly 180

Answer explanation

An acute angle is defined as an angle that is less than 90 degrees, making the correct choice 'Less than 90'.

Tags

CCSS.4.G.A.1

Define Straight Angle

• Less than 90

• Exactly 90

• Greater than 90 and less than 180

• Exactly 180

Answer explanation

A straight angle is exactly 180 degrees, forming a straight line. It is not less than 90, exactly 90, or greater than 90 and less than 180.

Tags

CCSS.4.G.A.1

Right, acute, or obtuse?

• Acute

• Right

• Obtuse

Answer explanation

The correct answer is Obtuse because an obtuse angle measures more than 90 degrees but less than 180 degrees.

Tags

CCSS.4.G.A.1

Right, acute, or obtuse?

• Right

• Acute

• Obtuse

Answer explanation

The correct answer is Acute because an acute angle measures less than 90 degrees.

Tags

CCSS.4.G.A.1

This angle is written as......

•  ∠ABC

•  ∠ACB

• ∠BCA

• ∠CAB

Answer explanation

The correct way to write this angle is ∠ABC, where A is the vertex, B is the initial side, and C is the terminal side.

If I wanted to name ∠KGL which colored angle am I talking about?

• light blue

• yellow

• blue 

• green

Answer explanation

The colored angle ∠KGL is yellow because it is the only angle mentioned in the question.

If I wanted to name the red angle, which of these options would be acceptable?

• ∠HLG

• ∠KLH

• ∠LHG

• ∠HGL

Answer explanation

The acceptable name for the red angle is ∠HLG because it follows the standard naming convention where the vertex is in the middle.

What is name for the purple angle?

• ∠KGH

• ∠LGH

• ∠LHG

• ∠K

Answer explanation

Another name for ∠H is ∠LHG because the vertex is in the middle and the other two points are in alphabetical order.

Which of the following is a correct name for the angle shown?  Select all that apply.

Answer explanation

The correct names for the angle shown are \(\angle MTR\), \(\angle T\), and \(\angle3\) as indicated in the options provided.