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JulsSmile [24]
3 years ago
6

Use the diagram to find the angle measures of triangle recall that the sum of the angle measures of a triangle 180

Mathematics
2 answers:
tamaranim1 [39]3 years ago
5 0

Answer:

Bottom left angle is 19°

Bottom right angle is 28°

Top angle is 133°

Step-by-step explanation:

Since all angles of a triangle add up to 180° we know x + 7x + x+9=180. then we combine like terms to get 9x+9=180. Next, we do inverse operation to find X. First subtract 9 from both sides of the equation to get 9x=171 then divide 9 from both sides to get x=19. No that we know x, we can find the values of the angles by putting in 19 for x. Bottom left angle is 19°, bottom right angle is 28°, top angle is 133°.

ahrayia [7]3 years ago
4 0

Answer:

x=19º

x+9=28º

7x=133º

Step-by-step explanation:

x+9+x+7x=180

9x+9=180

9x=180-9

9x=171

x=19

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