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Masja [62]
3 years ago
12

Angle Sum Theorem, thank you so much for the help, in advance! ​

Mathematics
1 answer:
daser333 [38]3 years ago
7 0

Answer:

x=20°, and y is 90° btw

Step-by-step explanation:

This is an iscoceles triangle, since the base angles are equal and the altitude bisects one of the angles. 180 - 110 = 70, meaning the angles are 70 , 70 and 2x. We know that 70 + 70 + 2x = 180 from the angle sum theorem, so 140 + 2x = 180, and 40 = 2x. x = 20°

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