3 years ago

Find each missing angle measure

Mathematics

2 answers:

timurjin [86]3 years ago

7 0

Answer: angle 1=129 degrees

Step-by-step explanation:

180 - 99 - 30 = 51

all the angles of a triangle should add up to be 180 degrees

51+99+30=180

angle 1 is supplementary to the angle that is 51 degrees so it would be 129 degrees. 180-51=129

natta225 [31]3 years ago

5 0

Answer:

129⁰

Step-by-step explanation:

angle 1 = 99 + 30

angle 1 = 129⁰

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