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3 years ago

9:45 on Tuesday Questions

Mathematics

1 answer:

Harlamova29_29 [7]3 years ago

7 0

Answer:

See below

Step-by-step explanation:

Angle 4 is exterior angle of the triangle and as per definition:

∠4 = ∠1 + ∠2

Angle 4 is supplementary with angle 3, they sum up to straight angle of 180°

∠4 = 180° - ∠3

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Answer:

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