1.4 – Geometry Using Paper Folding

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1.4 Geometry Using Paper Folding
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Basic Terms

• Parallel Lines ()
• Two coplanar lines that do not intersect
• Perpendicular Lines (?)
• Two lines that intersect to form a right angle

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Bisectors

• Segment Bisector
• A line that divides a segment into two congruent
  pieces
• MIDPOINT Where the segment bisector cuts
  through the segment
• Perpendicular Bisector
• A segment bisector that passes through the
  segment forming right angles

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Bisectors

• Angle Bisector
• A line or ray that divides an angle into two
  congruent angles

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Applying Segment Bisectors

• C is the midpoint of AB.
• If AC 3x 4 and CB 7x 12, find x, AC, AB

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Applying Angle Bisectors

• AB bisects ltCAD.
• If mltCAB 50 and mltBAD 4x6 find x