2. 4.14.2 4.3 & 4.4 4.5 & 4.6 4.7 10 20 30 40 50

3. + Question 4.1 – 10 Identify the triangle that fits the given description. obtuse

4. + Answer 4.1 – 10 JLM

5. + Question 4.1 - 20 Identify the triangle that fits the given description. acute

6. + Answer 4.1 – 20 JKL

7. + Question 4.1 - 30 Identify the triangle that fits the given description. equilateral

8. + Answer 4.1 – 30 JKL

9. + Question 4.1 - 40 Identify the triangle that fits the given description. isosceles

10. + Answer 4.1 – 40 JLM

11. + Question 4.1 - 50

12. + Answer 4.1 – 50 acute

13. + Question 4.2 - 10 Find the value of x.

14. + Answer 4.2 – 10 33

15. + Question 4.2 - 20 Find the value of x.

16. + Answer 4.2 – 20 11

17. + Question 4.2 – 30 Find the mL1.

18. + Answer 4.2 – 30 137 o

19. + Question 4.2 - 40

20. + Answer 4.2 – 40 82 o, 82 o

21. + Question 4.2 - 50

22. + Answer 4.2 – 50 59 o, 90 o

23. + Question 4.3 & 4.4- 10 Find the value of x.

24. + Answer 4.3 & 4.4 – 10 5

25. + Question 4.3 & 4.4 - 20 Find the length of the hypotenuse in the triangle shown. Use a calculator to round your answer to the nearest tenth.

26. + Answer 4.3 & 4.4 – 20 17.2

27. + Question 4.3 & 4.4- 30 Plot the points and find the distance between them.

28. + Answer 4.3 & 4.4 – 30 10

29. + Question 4.3 & 4.4 - 40 Plot the points and find the distance between them.

30. + Answer 4.3 & 4.4 – 40 about 4.5

31. + Question 4.3 & 4.4 - 50 Find the measure of all numbered angles in the figure below.

32. + Answer 4.3 & 4.4 – 50 mL1 = 118 o mL2 = 31 o mL3 = 46 o

33. + Question 4.5 & 4.6 - 10 Is the triangle shown below acute, right, or obtuse?

34. + Answer 4.5 & 4.6 – 10 acute

35. + Question 4.5 & 4.6 - 20 Classify the triangle with the given side lengths as acute, right, or obtuse.

36. + Answer 4.5 & 4.6 – 20 obtuse

37. + Question 4.5 & 4.6 - 30 Classify the triangle with the given side lengths as acute, right, or obtuse.

38. + Answer 4.5 & 4.6 – 30 obtuse

39. + Question 4.5 & 4.6 - 40 D is the centroid of ABC. Find DC and DE if EC = 33.

40. + Answer 4.5 & 4.6 – 40 DC = 22 DE = 11

41. + Question 4.5 & 4.6 - 50 n y P is the centroid of JKL. Find KP and PM.

42. + Answer 4.5 & 4.6 – 50 KP = 12 PM = 6

43. + Question 4.7 - 10 Use the diagram at the right to complete the statement.

44. + Answer 4.7 – 10 mLC AB AB < BC < CA

45. + Question 4.7 - 20 Name the smallest and largest angles of the triangle.

46. + Answer 4.7 – 20 smallest: LK largest: LJ

47. + Question 4.7 - 30 Name the shortest and longest sides of the triangle.

48. + Answer 4.7 – 30 shortest: WX longest: YW

49. + Question 4.7 - 40 Can the side lengths form a triangle? Explain.

50. + Answer 4.7 – 40 No, because 2 + 4 = 6. Yes, because the sum of two sides is greater than the sum of the third in all three cases. A triangle can be formed. No, because 5 + 11 < 17.

51. + Question 4.7 - 50

52. + Answer 4.7 – 50 Yes, because the sum of two sides is greater than the third side in all three cases. A triangle can be formed with these measurements.