For the four-line geometry. a. How many triangles exist in the geometry in which all three sides are lines of the geometry? b. How many other lines are parallel to each line?

Elementary Geometry For College Students, 7e
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ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
Chapter6: Circles
Section6.4: Some Constructions And Inequalities For The Circle
Problem 29E: Given circle O with mBC=120, and mAC=130. a Which angle of triangle ABC is smallest? b Which side of...
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For the four-line geometry.
a. How many triangles exist in the geometry in which all three sides
are lines of the geometry?
b. How many other lines are parallel to each line? 

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