3 years ago

PLZ HELP!! I REWARD BRAINLIEST. plz no silly answers i grinded for these points

Mathematics

1 answer:

Tasya [4]3 years ago

5 0

Answer:

180° - 1/2(α + β)

Step-by-step explanation:

<u>The two angles of the triangle ADB are:</u>

m∠A/2 and m∠B/2 or
α/2 and β/2

<u>The three interior angles add to 180°, so the missing angle is:</u>

m∠ADB = 180° - 1/2(α + β)

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