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horrorfan [7]
3 years ago
14

PLEASEE HELP ASAP I REALLY NEED HELP

Mathematics
1 answer:
AURORKA [14]3 years ago
7 0

Answer:

1) y = 115°

2) x = 120°

3) x = 163°

Step-by-step explanation:

  • the sum of the interior angles of a figure = (number of sides - 2) * 180

1)

the sum of the interior angles of this figure = (5 - 2) * 180 = 540°

the fifth angle = the sum of the interior angles - the sum of the four angles

the fifth angle or y = 540 - (90 + 135 + 112 + 88) = 115

2)

the sum of the interior angles = (6 - 2) * 180 = 720°

x = 720 - (90 + 90 + 140 + 150 + 130) = 120

3)

the sum of the interior angles = (5 - 2) * 180 = 540°

x = 540 - (68 + 121 + 103 + 85) = 163

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