## anonymous one year ago Meg described four triangles as shown below: Triangle P: All sides have length 7 cm. Triangle Q: Two angles measure 55°. Triangle R: Two sides have length 8 cm, and the included angle measures 60°. Triangle S: Base has length 8 cm, and base angles measure 55°. Which triangle is not a unique triangle?

1. anonymous

@waterineyes

2. anonymous

3. anonymous

What is a unique triangle?

4. anonymous

Unique Triangles are Triangles that do not have an equivalent. This means there is not another triangle that has the exact dimensions or shape.

5. anonymous

@waterineyes

6. anonymous

7. anonymous

See, in P, all the sides are equal, so here you get equivalent... So it is unique..

8. anonymous

In Q also, you have two sides equal, here also equal term comes, it is not unique..

9. anonymous

*i mean Q is also unique..

10. anonymous

ok so that leaves R and S

11. anonymous

hell : In Q, two angles are equal, so it is also unique..

12. anonymous

In R, see two sides are equal, it is also unique...

13. anonymous

ok so its not the first 2 right? lol

14. anonymous

See, where you are getting something equal, that is unique...

15. anonymous

oh ok and S isn't

16. anonymous

so my answer would be S then?

17. anonymous

In third, R, as two sides are equal, see they are equal, so R is unique.. Yes, S is not unique as side is not equal to any other side and angle also is not equal to any other angle of triangle..

18. anonymous

Hopefully, the answer is "last letter" of my username.. :P

19. anonymous

ok then thank you so much! @waterineyes

20. anonymous

$$\dagger$$.