Triangles and Angle Relationships

Triangles and Angle Relationships

Unit 7

Vocabulary Terms

• Angle Relationship

• Adjacent

• Triangle Inequality Theorem

• Supplementary

• Triangle

• Protractor

• Complementary Angles

Vocabulary Terms

• Congruent

• Vertical

• Sides

Multiple Select

Self Check:

Can you use a protractor?

• 4 - Best - I can teach this

• 3 - Nearing Mastery - I can do it on my own

• 2 - Novice - I can do it with some hints

• 1 - Beginner - I am not there yet

Multiple Choice

m  $\angle$  A = 35 

m $\angle$  B = 2x + 15

If those angles are complementary, what is x?

• x = 10

• x = 20

• x = 25

• x = 65

Multiple Choice

m  $\angle$  A = 35 

m $\angle$  B = 2x + 15

If those angles are vertical, what is x?

• x = 10

• x = 20

• x = 25

• x = 65

Multiple Choice

m  $\angle$  A = 35 

m $\angle$  B = 2x + 15

If those angles are supplementary, what is x?

• x = 10

• x = 20

• x = 25

• x = 65

Multiple Choice

Which set of angle measures could be the interior angles of a triangle?

• 90°, 90°, 90°

• 80°, 80°, 200°

• 40°, 50°, 60°

• 15°, 30°, 135°

Multiple Choice

Can this set of angles be used to construct a triangle?

90^o, 80^o , 20^o

• Yes

• No

• I don't know

Multiple Choice

What type of angle is shown?

• acute
• obtuse
• right
• straight

Multiple Choice

What type of angle is shown?

• acute

• obtuse

• right

• straight

Multiple Choice

What angle pair is this?

• supplementary (add up to 180^o)

• Vertical Angles (they are congruent)

• Corresponding angles (they are congruent)

• Complementary angles (add up to 90^o)

Multiple Choice

Solve for x.

• -5

• 8

• 9

• 5

Multiple Choice

Find the measure of each angle indicated.

• 139°

• 66°

• 138°

• 116°

Multiple Choice

Which names a pair of adjacent angles?

• ∠CXD and ∠FXE
• ∠CXF and ∠DXE
• ∠CXD and ∠DXE

Multiple Choice

What is the missing angle?

• 47

• 57

• 53

• 133

Multiple Choice

What is the value of x?

• 37

• 72

• 108

• 18

Multiple Choice

What are adjacent angles?

• Two angles that share a common ray.

• Two angles that are opposite each other.

• Two angles that add up to 180.

• Two angles that add up to 90.

Multiple Choice

∠1 and ∠3 can best be described as - (opposite angles formed by intersecting lines.)

• complementary angles
• supplementary angles
• vertical angles
• adjacent angles

Multiple Choice

Find the missing angle.

• 60

• 70

• 50

• 140

Multiple Select

Self Check:

Can you determine if three given side lengths forms a triangle?

• 4 - Best - I can teach this

• 3 - Nearing Mastery - I can do it on my own

• 2 - Novice - I can do it with some hints

• 1 - Beginner - I am not there yet

Multiple Select

Self Check:

Can you find the missing measurements of a triangle given the two other sides?

• 4 - Best - I can teach this

• 3 - Nearing Mastery - I can do it on my own

• 2 - Novice - I can do it with some hints

• 1 - Beginner - I am not there yet

Multiple Select

Self Check:

Can you identify supplementary angles?

• 4 - Best - I can teach this

• 3 - Nearing Mastery - I can do it on my own

• 2 - Novice - I can do it with some hints

• 1 - Beginner - I am not there yet

Multiple Select

Self Check:

Can you identify complementary angles?

• 4 - Best - I can teach this

• 3 - Nearing Mastery - I can do it on my own

• 2 - Novice - I can do it with some hints

• 1 - Beginner - I am not there yet

Multiple Select

Self Check:

Can you identify adjacent angles?

• 4 - Best - I can teach this

• 3 - Nearing Mastery - I can do it on my own

• 2 - Novice - I can do it with some hints

• 1 - Beginner - I am not there yet

Multiple Select

Self Check:

Can you identify vertical angles?

• 4 - Best - I can teach this

• 3 - Nearing Mastery - I can do it on my own

• 2 - Novice - I can do it with some hints

• 1 - Beginner - I am not there yet

Multiple Select

Self Check:

Can you identify angles that make a straight line?

• 4 - Best - I can teach this

• 3 - Nearing Mastery - I can do it on my own

• 2 - Novice - I can do it with some hints

• 1 - Beginner - I am not there yet