1. Beat the Computer! Geometry Vocabulary for Unit 3
Chris Giovanello, LBUSD Math Curriculum Office, 2004

2. Chris Giovanello, LBUSD Math Curriculum Office, 2004
Directions:
A slide will appear with a term
Say the definition aloud before the computer can answer (5 sec.)
You will hear a sound when the slide changes
Chris Giovanello, LBUSD Math Curriculum Office, 2004

3. Chris Giovanello, LBUSD Math Curriculum Office, 2004
transversal t l m 1 2 7 4 5 8 3 6
Chris Giovanello, LBUSD Math Curriculum Office, 2004

4. a line that intersects two coplanar lines at two distinct points
transversal:
a line that intersects two coplanar lines at two distinct points t l m 1 2 7 4 5 8 3 6
Line t is the transversal for lines l and m.
Chris Giovanello, LBUSD Math Curriculum Office, 2004

5. alternate interior anglesm 1 2 7 4 5 8 3 6
Chris Giovanello, LBUSD Math Curriculum Office, 2004

6. alternate interior angles:
nonadjacent interior angles that lie on opposite sides of the transversal t l m 1 2 7 4 5 8 3 6
Alternate interior ’s:
3 & 5
4 & 6
Chris Giovanello, LBUSD Math Curriculum Office, 2004

7. same-side interior angles1 2 7 4 5 8 3 6
Chris Giovanello, LBUSD Math Curriculum Office, 2004

8. same-side interior angles:
interior angles that lie on the same side of the transversal
Same-side interior ’s:
3 & 6
4 & 5 t l m 1 2 7 4 5 8 3 6
Chris Giovanello, LBUSD Math Curriculum Office, 2004

9. Chris Giovanello, LBUSD Math Curriculum Office, 2004
corresponding angles t l m 1 2 7 4 5 8 3 6
Chris Giovanello, LBUSD Math Curriculum Office, 2004

10. corresponding angles:
angles that lie on the same side of the transversal and are in corresponding positions
Corresponding ’s:
1 & 5
2 & 6
3 & 7
4 & 8 t l m 1 2 7 4 5 8 3 6
Chris Giovanello, LBUSD Math Curriculum Office, 2004

11. Chris Giovanello, LBUSD Math Curriculum Office, 2004
two-column proof
Chris Giovanello, LBUSD Math Curriculum Office, 2004

12. Chris Giovanello, LBUSD Math Curriculum Office, 2004
two-column proof:
a convincing argument that uses deductive reasoning in which the statements and reasons are aligned in columns
Chris Giovanello, LBUSD Math Curriculum Office, 2004

13. Chris Giovanello, LBUSD Math Curriculum Office, 2004
flow proof
Chris Giovanello, LBUSD Math Curriculum Office, 2004

14. Chris Giovanello, LBUSD Math Curriculum Office, 2004
flow proof:
a convincing argument that uses deductive reasoning in which arrows show the logical connections between the statements
Chris Giovanello, LBUSD Math Curriculum Office, 2004

15. Chris Giovanello, LBUSD Math Curriculum Office, 2004
equiangular triangle
Chris Giovanello, LBUSD Math Curriculum Office, 2004

16. equiangular triangle: a triangle that has three congruent angles
Chris Giovanello, LBUSD Math Curriculum Office, 2004

17. Chris Giovanello, LBUSD Math Curriculum Office, 2004
acute triangle
Chris Giovanello, LBUSD Math Curriculum Office, 2004

18. a triangle that has three acute angles
acute triangle:
a triangle that has three acute angles
Chris Giovanello, LBUSD Math Curriculum Office, 2004

19. Chris Giovanello, LBUSD Math Curriculum Office, 2004
right triangle
Chris Giovanello, LBUSD Math Curriculum Office, 2004

20. a triangle that has one right angle
right triangle:
a triangle that has one right angle
Chris Giovanello, LBUSD Math Curriculum Office, 2004

21. Chris Giovanello, LBUSD Math Curriculum Office, 2004
obtuse triangle
Chris Giovanello, LBUSD Math Curriculum Office, 2004

22. a triangle that has one obtuse angle
obtuse triangle:
a triangle that has one obtuse angle
Chris Giovanello, LBUSD Math Curriculum Office, 2004

23. Chris Giovanello, LBUSD Math Curriculum Office, 2004
equilateral triangle
Chris Giovanello, LBUSD Math Curriculum Office, 2004

24. equilateral triangle: a triangle that has three congruent sides
Chris Giovanello, LBUSD Math Curriculum Office, 2004

25. Chris Giovanello, LBUSD Math Curriculum Office, 2004
isosceles triangle
Chris Giovanello, LBUSD Math Curriculum Office, 2004

26. a triangle that has at least two sides congruent
isosceles triangle:
a triangle that has at least two sides congruent
Chris Giovanello, LBUSD Math Curriculum Office, 2004

27. Chris Giovanello, LBUSD Math Curriculum Office, 2004
scalene triangle
Chris Giovanello, LBUSD Math Curriculum Office, 2004

28. a triangle that has no sides congruent
scalene triangle:
a triangle that has no sides congruent
Chris Giovanello, LBUSD Math Curriculum Office, 2004

29. exterior angle of a polygon
Chris Giovanello, LBUSD Math Curriculum Office, 2004

30. an angle formed by a side and an extension of an adjacent side
exterior angle of a polygon:
an angle formed by a side and an extension of an adjacent side
Exterior angle
Chris Giovanello, LBUSD Math Curriculum Office, 2004

31. remote interior angles of a triangle
Chris Giovanello, LBUSD Math Curriculum Office, 2004

32. remote interior angles of a triangle:
the two nonadjacent interior angles corresponding to each exterior angle
Exterior angle
Remote interior angles
Chris Giovanello, LBUSD Math Curriculum Office, 2004

33. Chris Giovanello, LBUSD Math Curriculum Office, 2004
polygon
Chris Giovanello, LBUSD Math Curriculum Office, 2004

34. polygon:
a closed plane figure with at least three sides that are segments
No!
Yes!
No!
Chris Giovanello, LBUSD Math Curriculum Office, 2004

35. Chris Giovanello, LBUSD Math Curriculum Office, 2004
convex polygon
Chris Giovanello, LBUSD Math Curriculum Office, 2004

36. a polygon that has no diagonal with points outside the polygon
convex polygon:
a polygon that has no diagonal with points outside the polygon
Chris Giovanello, LBUSD Math Curriculum Office, 2004

37. Chris Giovanello, LBUSD Math Curriculum Office, 2004
concave polygon
Chris Giovanello, LBUSD Math Curriculum Office, 2004

38. Chris Giovanello, LBUSD Math Curriculum Office, 2004
concave polygon:
a polygon that has at least one diagonal with points outside the polygon
Chris Giovanello, LBUSD Math Curriculum Office, 2004

39. Chris Giovanello, LBUSD Math Curriculum Office, 2004
quadrilateral
Chris Giovanello, LBUSD Math Curriculum Office, 2004

40. a polygon with four sides
quadrilateral:
a polygon with four sides
Chris Giovanello, LBUSD Math Curriculum Office, 2004

41. Chris Giovanello, LBUSD Math Curriculum Office, 2004
pentagon
Chris Giovanello, LBUSD Math Curriculum Office, 2004

42. a polygon with five sides
pentagon:
a polygon with five sides
Chris Giovanello, LBUSD Math Curriculum Office, 2004

43. Chris Giovanello, LBUSD Math Curriculum Office, 2004
hexagon
Chris Giovanello, LBUSD Math Curriculum Office, 2004

44. a polygon with six sides
hexagon:
a polygon with six sides
Chris Giovanello, LBUSD Math Curriculum Office, 2004

45. Chris Giovanello, LBUSD Math Curriculum Office, 2004
heptagon
Chris Giovanello, LBUSD Math Curriculum Office, 2004

46. a polygon with seven sides
heptagon:
a polygon with seven sides
Chris Giovanello, LBUSD Math Curriculum Office, 2004

47. Chris Giovanello, LBUSD Math Curriculum Office, 2004
octagon
Chris Giovanello, LBUSD Math Curriculum Office, 2004

48. a polygon with eight sides
octagon:
a polygon with eight sides
Chris Giovanello, LBUSD Math Curriculum Office, 2004

49. Chris Giovanello, LBUSD Math Curriculum Office, 2004
nonagon
Chris Giovanello, LBUSD Math Curriculum Office, 2004

50. a polygon with nine sides
nonagon:
a polygon with nine sides
Chris Giovanello, LBUSD Math Curriculum Office, 2004

51. Chris Giovanello, LBUSD Math Curriculum Office, 2004
decagon
Chris Giovanello, LBUSD Math Curriculum Office, 2004

52. a polygon with ten sides
decagon:
a polygon with ten sides
Chris Giovanello, LBUSD Math Curriculum Office, 2004

53. Chris Giovanello, LBUSD Math Curriculum Office, 2004
dodecagon
Chris Giovanello, LBUSD Math Curriculum Office, 2004

54. a polygon with twelve sides
dodecagon:
a polygon with twelve sides
Chris Giovanello, LBUSD Math Curriculum Office, 2004

55. Chris Giovanello, LBUSD Math Curriculum Office, 2004
equilateral polygon
Chris Giovanello, LBUSD Math Curriculum Office, 2004

56. a polygon with all sides congruent
equilateral polygon:
a polygon with all sides congruent
Chris Giovanello, LBUSD Math Curriculum Office, 2004

57. Chris Giovanello, LBUSD Math Curriculum Office, 2004
equiangular polygon
Chris Giovanello, LBUSD Math Curriculum Office, 2004

58. a polygon with all angles congruent
equiangular polygon:
a polygon with all angles congruent
Chris Giovanello, LBUSD Math Curriculum Office, 2004

59. Chris Giovanello, LBUSD Math Curriculum Office, 2004
regular polygon
Chris Giovanello, LBUSD Math Curriculum Office, 2004

60. a polygon that is both equilateral and equiangular
regular polygon:
a polygon that is both equilateral and equiangular
Chris Giovanello, LBUSD Math Curriculum Office, 2004

61. Chris Giovanello, LBUSD Math Curriculum Office, 2004
slope-intercept form
Chris Giovanello, LBUSD Math Curriculum Office, 2004

62. slope-intercept form: a linear equation in the form of
y = mx + b
Chris Giovanello, LBUSD Math Curriculum Office, 2004

63. Chris Giovanello, LBUSD Math Curriculum Office, 2004
standard form
Chris Giovanello, LBUSD Math Curriculum Office, 2004

64. a linear equation in the form of
standard form:
a linear equation in the form of
Ax + By = C
Chris Giovanello, LBUSD Math Curriculum Office, 2004

65. Chris Giovanello, LBUSD Math Curriculum Office, 2004
point-slope form
Chris Giovanello, LBUSD Math Curriculum Office, 2004

66. a linear equation in the form of
point-slope form:
a linear equation in the form of
y - y1 = m(x - x1)
Chris Giovanello, LBUSD Math Curriculum Office, 2004