3 years ago

How I get x for number 7

Mathematics

1 answer:

lakkis [162]3 years ago

6 0

Answer:

x = 50

Step-by-step explanation:

Angles of a triangle add up to 180°. So the third angle of the triangle on the right is:

180° − 43° − 57° = 80°

Vertical angles are congruent, so the angle on the other side is also 80°. Therefore:

x° + x° + 80° = 180°

2x° = 100°

x = 50

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