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Question
primary 6 | Maths
| Geometry
2 Answers Below
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Date Posted: 2 years ago
Views: 186
Add the angles of the two triangles together.
a + b + e + c + d + e = 180 + 180
a + b + c + d + 2e = 360
290 + 2e = 360
2e = 360 - 290
2e = 70
e = 70 ÷ 2
e = 35
a + b + e + c + d + e = 180 + 180
a + b + c + d + 2e = 360
290 + 2e = 360
2e = 360 - 290
2e = 70
e = 70 ÷ 2
e = 35
Alternatively, realise that a + b = c + d
So 290 = a + b + c + d = 2(a + b)
a + b = 290 ÷ 2 = 145
e = 180 - 145 = 35
So 290 = a + b + c + d = 2(a + b)
a + b = 290 ÷ 2 = 145
e = 180 - 145 = 35
∠a +∠b = ∠c +∠d = 290°÷2
∠e = 180° - 290°÷2 = 35° (Ans)
∠e = 180° - 290°÷2 = 35° (Ans)
∠a +∠b = ∠c +∠d = 290°÷2
∠e = 180° - 290°÷2 = 35° (Ans)
∠e = 180° - 290°÷2 = 35° (Ans)
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Date Posted:
2 years ago
alr answered in comments, please ignore
No need to ignore. Your drawing is great!
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