Answer:
Definition of a perpendicular bisector.
Step-by-step explanation:
A perpendicular bisector of line segment AB will have to pass through point S.
Step-by-step explanation:






Answer:
(A.
Explanation:
In A, line AD straight into BC, thus creating two 90 degree angles. This means that they are perpendicular.
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Answer:
3
Step-by-step explanation:
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