Ashley10116 Group Title Carla drew two triangles; triangle ABC and triangle PQR, on a grid. She planned to cut out the two triangles to make a flag. The vertices of triangle ABC are at A(1, 4), B(-2, -1), and C(3, -2). The vertices of triangle PQR are at P(-3, 0), Q(-2, -4), and R(2, 3). Using the coordinates of the vertices of each triangle explain whether the two triangles are congruent, similar or neither. Note: I understand I have to apply the formula, but I don't know what goes into it. Help is appreciated. 2 years ago 2 years ago

1. Ashley10116 Group Title

@ParthKohli @Callisto @dpaInc @AccessDenied @ajprincess

2. Ashley10116 Group Title

@shivamsinha

3. shivamsinha Group Title

1st it seems to be NePAL'S flag!! hehe ;)

4. Ashley10116 Group Title

?

5. Ashley10116 Group Title

Does anyone know how to do this..?

6. shivamsinha Group Title

what i think is.... findthe lengths of each sides of the 2 triangles .. and then compare the two triangles!!

7. Ashley10116 Group Title

Could you help me to do that?

8. shivamsinha Group Title
9. Ashley10116 Group Title

I just need the answer because I don't know how to set it up.

10. shivamsinha Group Title

|dw:1338109893305:dw|

11. shivamsinha Group Title

c dis is d triangle!!

12. shivamsinha Group Title

U KNOW THE DISTANCE FORMULA RIGHT?

13. Ashley10116 Group Title

Yes, I do, but I was wondering if the two triangles were congruent, similiar, or neither? It looks like neither.

14. shivamsinha Group Title

ok..now calculate the sides ...by using distance fomula!!

15. shivamsinha Group Title

and then compae get it?

16. Ashley10116 Group Title

No, I'm still lost.

17. shivamsinha Group Title

*compare

18. Callisto Group Title

When you get the distance, you can compare them Same length of side pairs=> congruent Length are in ratio => similar Neither => neither

19. shivamsinha Group Title

ok first u calculate the distances ..and then temme!!

20. shivamsinha Group Title

@Callisto .....hell yeah!

21. Ashley10116 Group Title

Can someone show me how to get the distance? I know the formula, but not what to plug in.

22. Callisto Group Title

$AB=\sqrt{(1-(-2))^2 + (4-(-1))^2} = \sqrt{(3)^2 + (5)^2} = \sqrt{34}$

23. shivamsinha Group Title

c callisti did it already... @Callisto how r u so fast in latex??

24. Ashley10116 Group Title

So what would the answer be?

25. Callisto Group Title

I've typed that about 10 minutes ago :|

26. shivamsinha Group Title

u try it urslf.. callisto has given u hint

27. Callisto Group Title

You need to find out all the length first :|

28. Ashley10116 Group Title

I don't understand how. ):

29. shivamsinha Group Title

ooo ...lol

30. Ashley10116 Group Title

Hahaha.

31. shivamsinha Group Title

c dis ... u'll undrstnd http://www.teacherschoice.com.au/maths_library/trigonometry/triangle_given_3_points.htm

32. Ashley10116 Group Title

Ok, I will work it out.

33. shivamsinha Group Title

its an example!!

34. Ashley10116 Group Title

It is neither?

35. Callisto Group Title

I think so

36. Ashley10116 Group Title

Yay!

37. shivamsinha Group Title

yep!

38. shivamsinha Group Title

congo!!

39. Callisto Group Title

here's the graph :|

40. Ashley10116 Group Title

:)

41. Ashley10116 Group Title

The vertices of triangle PQR on a coordinate grid are P(1, 5), Q(1, 3), and R(3, 2). Provide the coordinates of the vertices A, B, and C of triangle ABC that is congruent to PQR and explain why the two triangles are congruent. Do you understand this?

42. shivamsinha Group Title

are u doing your home work her??

43. shivamsinha Group Title

c'mon do it!!

44. Ashley10116 Group Title

I am taking questions from a review and trying to figure them out.

45. Ashley10116 Group Title

I don't know what it is asking for. If the two triangles are congruent, they equal each other.

46. shivamsinha Group Title

see.. if two triangles ar congruent means .. there all sides are equal.. and allangles are equal!!

47. Ashley10116 Group Title

So on a graph, it would be on the opposite side of the first?

48. shivamsinha Group Title

not necessary ... but yes eevn that is a possibility ..

49. shivamsinha Group Title

there are many possibilities

50. Ashley10116 Group Title

A(2,6) B(2,4) C(4,3) Is this congruent to the first?

51. shivamsinha Group Title

yep

52. shivamsinha Group Title

best method to find answers for such question is ... add or subtract a constant to all the coordinates!!

53. Ashley10116 Group Title

TY

54. shivamsinha Group Title

wcum ..srry 4 dis... bt medal!!