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HELP PLZ PLZ JUST HELP ME I really need help on these

HELP PLZ PLZ JUST HELP ME I really need help on these-example-1
User Jan Pisl
by
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1 Answer

5 votes

Answer:

∠1 = 140

∠2 = 40

∠3 = 65

∠4 = 75

∠5 = 115

Explanation:

3) ∠1 = 80 + 60 { Exterior angle of a triangle is equal to the sum of opposite interior angles}

∠1 = 140

∠1 = 140

∠2 + ∠1 = 180 {linear pair}

∠2 = 180 - 140 = 40

∠2 = 40

∠4 + 105 = 180 {linear pair}

∠4 = 180 - 105 = 75

∠4 = 75

∠2 + ∠3 = 105 { Exterior angle of a triangle is equal to the sum of opposite interior angles}

40 + ∠3 = 105

∠3 = 105 - 40 = 65

∠3 = 65

∠5 = ∠4 + 40

∠5 = 75 + 40 = 115

∠5 = 115

User Serpiton
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