How do i find x?
1 answer:
Answer:
<h3> To find x you need to divide polygon into triangles</h3><h3>The formula : "the sum of exterior angles=360°" is false for concaved polygons</h3>Step-by-step explanation:
α = 180° - 135° = 45°
β = 180° - 120° = 60°
γ = 180° - 60° = 120°
δ = 180° - x
ε = 180° - 80° = 100°
If we divide the pentagon into five triangles then:
5•180° = α + β + γ + δ + ε + 4x
900° = 45° + 60° + 120° + x + 100° + 4x
900° = 325° + 5x
5x = 575°
x = 115°
60° + 120° + 135° + 80° + 115° = 510° ≠ 360°
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Answer:
The endpoint, B, is (-7, -8)
Step-by-step explanation:
When I get a problem like this, the first thing I like to do is find the difference between the midpoint and the starting point.
In this problem it would be -5 - -3 = -2 and -2 - 4 = -6.
(-2, -6) is what will help us find the endpoint.
Take the midpoint, (-5, -2), and add those coordinates to it.
-5 + -2 = -7
-2 + -6 = -8
So our endpoint is (-7, -8)
Here is a graph, to help you visualize it.
