1. SECTION 1.4 Exploring Geometry by using Paper Folding
Unit 1

2. PERPENDICULAR LINES PARALLEL LINES
2 lines that intersect to form a right angle
2 coplanar lines that do not intersect

3. CONJECTURE A statement that you think is true.
An “EDUCATED GUESS” based on observations.

4. A conjecture about perpendicular and parallel lines
If 2 coplanar lines are perpendicular to the same line, then _____________

5. Measuring the distance from a point to a line
Why do you think the distance from a point to a line is defined along a perpendicular segment??

6. PAPER FOLDING ACTIVITY #2

7. SEGMENT & ANGLE BISECTORS

8. REMEMBER…
A segment is:
ENDPOINTS ON BOTH ENDS

9. SEGMENT BISECTOR
A line that divides a segment into 2 congruent parts

10. MIDPOINT
The point where a bisector intersects a segment.

11. PERPENDICULAR BISECTOR
A bisector that is perpendicular to a segment.

12. EXAMPLES

13. EXAMPLES

14. EXAMPLES

15. ANGLE BISECTOR
A line or ray that divides an angle into 2 congruent angles.

16. EXAMPLES

17. EXAMPLES

18. EXAMPLES

19. PAPER FOLDING ACTIVITY #3