1. Geometric Structure Chapter 1

2. Points, Lines, & Planes Lesson 1-1

3. Vocabulary • Undefined term • Point • Line • Collinear • Plane • Coplanar • Space • Locus

5. Example 1

6. Example 2

7. Example 3a

8. Example 3b

9. Example 4

11. Linear Measure & Precision Lesson 1-2

12. Vocabulary • line segment • precision • congruent • construction

13. Example 1

14. Example 2

15. Example 3 Find the precision for each measurement. Explain it’s meaning. • 5 millimeters • 8 ½ inches • 10 ¼ inches • 12.2 centimeters

16. Example 4a Find AC

17. Example 4b Find DE

18. Example 4c Find y and QP if P is between Q and R. QP = 2y, QR = 3y + 1, and PR = 21.

19. Example 4d Find x and BC if B is between A and C. AC = 4x – 12, AB = x, and BC = 2x + 3

20. Distance & Midpoint Lesson 1-3

21. Vocabulary • midpoint • segment bisector

22. Example 1 Use the number line to find CD.

23. Example 2 – Distance Formula Find the distance between R (5, 1) and S (-3, -3).

24. Example 2 – Pythagorean Theorem Find the distance between R (5, 1) and S (-3, -3).

25. Example 3 Find the midpoint of PQ.

26. Example 4 Find the coordinates of M, the midpoint of JK, for J (,-1, 2) and K (6, 1).

27. Example 5 Find the coordinates of X if Y (-1, 6) is the midpoint of XZ and Z has coordinates (2, 8).

28. Example 6 Find the measure of BC if B is the midpoint of AC.

29. Angle Measure Lesson 1-4

30. Vocabulary • degree • ray • opposite rays • angle • sides • vertex • interior • exterior • right angle • acute angle • obtuse angle • angle bisector

31. Example 1

32. Example 2

34. Example 3

38. Angle relationships Lesson 1-5

39. Vocabulary • adjacent angle • vertical angles • linear pair • complementary angles • supplementary angles • perpendicular

41. Example 1

43. Example 2 Find the measures of two complementary angles if the difference in the measures of the two angles is 12.

45. Example 3 Find x and y so that BE and AD are perpendicular.

46. Example 4