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olya-2409 [2.1K]
3 years ago
10

Need ASAP 20 points !

Mathematics
1 answer:
AlladinOne [14]3 years ago
4 0

Answer:

X = 116

Step-by-step explanation:

Total heptagon angle = 900

124 + 120 + 122 + 136 + 144 + 138 = 784

900 - 784 = 116

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