5.1 Angles of Triangles

​5.1 Angles of Triangles

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"The only place where success comes before work is in the dictionary.

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Fill in the Blanks

Find the measure of the indicated angle.

HINT!!! THE SUM OF THE ANGLES EQUALS 180 DEGREES.

Fill in the Blanks

Solve for x.

HINT!!! THE SUM OF THE ANGLES EQUALS 180 DEGREES.

Multiple Choice

Solve for x.

HINT!!! THE SUM OF THE ANGLES EQUALS 180 DEGREES. #8

• 8

• -10

• -7

• 6

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Multiple Choice

Which of the following terms best describes Angle d? #9

• Remote interior angle

• Corresponding angle

• Exterior angle

• Interior angle

Multiple Choice

Find the measure of the indicated angle.

HINT!!! USE EXTERIOR ANGLE THEOREM ANGLE 1 INSIDE + ANGLE 2 INSIDE = EXTERIOR ANGLE OUTSIDE. #5

• 89

• 211

• 119

• 81

Fill in the Blanks

Find the value of x.*** #11

EXTERIOR ANGLE= REMOTE INTERIOR ANGLE 1 + REMOTE INTERIOR ANGLE 2

Multiple Choice

Find the measure of the indicated angle. #12

• 40

• 108

• 72

• 68

Fill in the Blanks

Find the measure of the exterior angle. #40

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Multiple Choice

Fill in statement #3. #32

• $$m\angle7=m\angle2$$

• $$m\angle1=m\angle6$$

• $$m\angle1=m\angle3$$

• $$m\angle4=m\angle5$$

Multiple Choice

Fill in reason #3. #33

• $$\parallel\rightarrow$$  corresponding angles are  $$\cong$$  

• Substitution Property

• $$\parallel\rightarrow$$  alternate interior angles are  $$\cong$$  

• Transitive Property