3 years ago

I need help finding A

Mathematics

1 answer:

ivann1987 [24]3 years ago

3 0

Answer:

a=23

Step-by-step explanation:

angle a, b,c and are congruent

3a-9+3a-9+3a-9=180

combine like terms

9a-27=180

add 27 on both sides

9a=209

divide by 9 on both sides

a=23

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