1. Everyday Math Grade 4 – Lesson 1.3 Part 2: Triangles Copyright © 2010 Kelly Mott

2. Math Boxes Lesson 1.3

3. Copyright © 2010 Kelly Mott Math Box 1:

4. Copyright © 2010 Kelly Mott Math Box 2:

5. Copyright © 2010 Kelly Mott Math Box 3:

6. Copyright © 2010 Kelly Mott Math Box 4:

7. Copyright © 2010 Kelly Mott Math Box 5:

8. Copyright © 2010 Kelly Mott REVIEW

9. A __________ is a location in space that is usually marked with a dot. Z 1.Line 2.Line segment 3.Point 4.Ray Copyright © 2010 Kelly Mott

10. A __________ is made up of a set of points and continues without end in both directions. 1.Line 2.Line segment 3.Point 4.Ray Copyright © 2010 Kelly Mott

11. A __________ straight path that has a starting point and goes forever in one direction. 1.Line 2.Line segment 3.Point 4.Ray Copyright © 2010 Kelly Mott

12. A __________ is made up of 2 points with a straight path between them. 1.Line 2.Line segment 3.Point 4.Ray Copyright © 2010 Kelly Mott

13. A B C Name the Angle Copyright © 2010 Kelly Mott Right Angle 90 degrees

14. Copyright © 2010 Kelly Mott Name the Angle Acute Angle Less than 90 degrees

15. Copyright © 2010 Kelly Mott Name the Angle Obtuse Angle Greater than 90 degrees and less than 180 degrees

16. Copyright © 2010 Kelly Mott Name the Angle Straight Angle 180 degrees

17. What kind of angles is this? Copyright © 2010 Kelly Mott 1.Right 2.Acute 3.Obtuse 4.Straight

18. What kind of angles is this? Copyright © 2010 Kelly Mott 1.Right 2.Acute 3.Obtuse 4.Straight

19. What kind of angles is this? Copyright © 2010 Kelly Mott 1.Right 2.Acute 3.Obtuse 4.Straight

20. What kind of angles is this? Copyright © 2010 Kelly Mott 1.Right 2.Acute 3.Obtuse 4.Straight

21. __________or ______________________________ Copyright © 2010 Kelly Mott Name the Line, Line Segment, or Ray XYFG

22. __________or _________ Copyright © 2010 Kelly Mott Name the Line, Line Segment, or Ray LMN QR

23. Names: 1.___________________ 2.___________________ 3.___________________ B A C Name the Angles E D F Names: 1.___________________ 2.___________________ 3.___________________ J K L Copyright © 2010 Kelly Mott

25. How did you do? Copyright © 2010 Kelly Mott

26. Lesson 1.3 Part 2 Skill: Triangles

27. Part 1: What are triangles? Copyright © 2010 Kelly Mott

28. A triangle is a closed figure that has _____ angles. Label the angles above. Copyright © 2010 Kelly Mott What is an triangle?

29. A triangle has 3 vertices: _______ _______ _______ A triangle has 3 sides: _______ _______ _______ A triangle has 3 angles: _______ _______ _______ Copyright © 2010 Kelly Mott What is an triangle? A BC

30. Part 2: Naming Triangles Copyright © 2010 Kelly Mott

31. Triangles have three letter names. You name a triangle by listing the letter names for the vertices in order. This triangle has 6 possible names: _______ _______ _______ _______ _______ _______ Copyright © 2010 Kelly Mott How are triangles named? X YZ

32. Let’s try another. This triangle has 6 possible names: _______ _______ _______ _______ _______ _______ Copyright © 2010 Kelly Mott How are triangles named? D E F

33. Let’s try one more. This triangle has 6 possible names: _______ _______ _______ _______ _______ _______ Copyright © 2010 Kelly Mott How are triangles named? P QR

34. Part 2: Types of Triangles Copyright © 2010 Kelly Mott

35. Types of Triangles Copyright © 2010 Kelly Mott

36. This is an equilateral triangle All _____ sides are the same length. The angles of an equilateral triangle all measure ____ degrees. Equilateral Triangle Copyright © 2010 Kelly Mott

37. j Circle the Equilateral Triangles Copyright © 2010 Kelly Mott

38. This is an isosceles triangle _____ sides are the same length and _____ angles are the same. Isosceles Triangle Copyright © 2010 Kelly Mott

39. j Circle the Isosceles Triangles Copyright © 2010 Kelly Mott

40. These are scalene triangles. _____ sides are the same length. Scalene Triangle Copyright © 2010 Kelly Mott

41. j Circle the Scalene Triangles Copyright © 2010 Kelly Mott

42. These are right triangles. One angle measures _____ degrees. Right Triangle Copyright © 2010 Kelly Mott

43. A right triangle can sometimes be a _________________ triangle. Right Triangle Copyright © 2010 Kelly Mott

44. j Circle the Right Triangles Copyright © 2010 Kelly Mott

45. Part 3: Review & Matching Copyright © 2010 Kelly Mott

46. Polygons Copyright © 2010 Kelly Mott Isosceles Triangle

47. Polygons Copyright © 2010 Kelly Mott Equilateral Triangle

48. Polygons Copyright © 2010 Kelly Mott Scalene Triangle

49. Polygons Copyright © 2010 Kelly Mott Right Triangle

50. 1.Equilateral 2.Isosceles 3.Scalene 4.Right Match the Triangles Copyright © 2010 Kelly Mott

51. Part 4: Turning Point Review Copyright © 2010 Kelly Mott

52. Name the triangle. 1.Equilateral 2.Isosceles 3.Scalene 4.Right Copyright © 2010 Kelly Mott

53. Name the triangle. 1.Equilateral 2.Isosceles 3.Scalene 4.Right Copyright © 2010 Kelly Mott

54. Name the triangle. 1.Equilateral 2.Isosceles 3.Scalene 4.Right Copyright © 2010 Kelly Mott

55. Name the triangles. 1.Equilateral 2.Isosceles 3.Right Copyright © 2010 Kelly Mott

56. Name these triangles. 1.Equilateral 2.Isosceles 3.Scalene 4.Right Copyright © 2010 Kelly Mott

57. Name these triangles. 1.Equilateral 2.Isosceles 3.Scalene 4.Right Copyright © 2010 Kelly Mott

58. Name these triangles. 1.Equilateral 2.Isosceles 3.Scalene Copyright © 2010 Kelly Mott

60. Part 5: BRAIN POP - TRIANGLES Copyright © 2010 Kelly Mott

61. BRAIN POP Video: http://www.brainpop.com/math/g eometryandmeasurement/typeso ftriangles/ Quiz: http://www.brainpop.com/math/g eometryandmeasurement/typeso ftriangles/quiz/ Copyright © 20010Kelly Mott

62. How did you do? Copyright © 2010 Kelly Mott

63. HOMEWORK Poster Showing Types of Triangles Copyright © 20010Kelly Mott

64. Copyright © 2010 Kelly Mott HOMEWORK : TRIANGLE POSTER Isoceles- 2 sides equal Scalene- no sides equal Right- 1 right angle Equilateral- all sides equal

65. Does this make sense? Copyright © 2010 Kelly Mott