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Section 3.2 (continued)
Theorem 3.2.6, page 86 (Crossbar Theorem)
W
X
U
V
1
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Proof.
2
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3
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4
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Theorem 3.2.7 (Isosceles Triangle Theorem)
Equal sides imply equal angles.
Q
Proof.
P
R
5
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Theorem 3.2.8 (Perpendicular Bisector) A point is on a perpendicular bisector of a line segment if an only if it is equidistant from the end points of the segment.
Proof.
Part I: On a perpendicular bisector => P
equidistant
A
T
B
6