Question

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Answer 1

Respuesta:

3. d) 130°

4. d) 60°

Explicación paso a paso:

3.

∡A + 25 + 20 = 100

∡A + 45 = 100

∡A = 100 - 45

∡A = 55°

∡A + 25 + 25 + 25 = x

55 + 75 = x

x = 130°

4.

2 θ + 10° + 5 θ + 30° + 10° + 4 θ = 160°

50° + 11 θ = 160°

11 θ = 160 - 50

11 θ = 110°

θ = 110° / 11

θ = 10°

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6 θ = x

6 (10°) = x

x = 60°