Calculate the sizes of the angles marked a, b, c, d and e in the triangles shown.
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Answer:
∠c = 123 (vertically opposite)
∠a = 360 - (123x2)/2
∠a = 114/2 = 57
∵ ∠a = ∠d
∴∠d = 57
∠e = 180 - 13 + 57 (angle sum property )
∠e = 110
∠b = 180 - 57 + 37 (angle sum property )
∠b = 86
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Answered by
0
Answer:
∠c = 123 (vertically opposite)
∠a = 360 - (123x2)/2
∠a = 114/2 = 57
∵ ∠a = ∠d
∴∠d = 57
∠e = 180 - 13 + 57 (angle sum property )
∠e = 110
∠b = 180 - 57 + 37 (angle sum property )
∠b = 86
Step-by-step explanation:
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