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Serjik [45]
3 years ago
9

Please please help!! and explain!

Mathematics
1 answer:
ICE Princess25 [194]3 years ago
4 0

angles in a triangle add up to 180

so x = 180 - ( 70 + 90 ) = 20

this is because the two other angles in the both of the identical triangles are 70 and 90

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