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Tems11 [23]
3 years ago
5

Find the value of each variable, line l is tangent.

Mathematics
1 answer:
loris [4]3 years ago
4 0
This is the concept of geometry, we are required to find the values of angle a,b,c,d;
Given that the triangles are by line intersecting two parallel lines, therefore we can conclude that both triangles are similar;
thus;
angle b=40° ⇒alternate angles
angle b= angle c=40° ⇒base angles of isosceles triangles are equal;
angle d=180-(40+40)=180-80=100°
angle a=360-80=240°
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Answer:

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Step-by-step explanation:

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