# Triangle Angle Theorems

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question
Which statement regarding the interior and exterior angles of a triangle is true?
a. An exterior angle is supplementary to the adjacent interior angle.
question
(triangle (9x)Â° T:(5x)Â° S: (9 + x)Â° The value of x is _____
3
question
Which is a true statement about the diagram?
c. m<1 + m<2 = 180Â°
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xÂ° S: 35Â° R: 58Â° What is the value of x?
d. x = 93
question
Which represents an exterior angle of triangle ABF?
d.
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(x + 15)Â° xÂ° (4x - 20)Â° What is the value of x?
d. x = 40
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Given: Lines y and z are parallel, and ABC forms a triangle l. Prove: m<5 + m<2 + m<6 = 180Â° Which could be the missing reason in Step 3?
a. alternate interior angles are congruent
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130Â°, xÂ°, 134Â° The value of x is
96
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J K M L Which statement regarding the diagram is true?
b. m
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X, Y, Z If the m
d. m
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Which angle has a measure equal to the sum of m
a.
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xÂ° P: 38Â° O: 39Â° Which statement about the value of x is true?