marcoduuuh 3 years ago DEF is a right triangle. A. True B. False (Picture below.)

1. marcoduuuh

2. kaylific

Did you try using the Pythagorean Thereom?

3. nicolebears

False. |dw:1352329866882:dw|

4. kaylific

actually @nicolebears there are some right triangles that you will see that don't have the square in the corner

5. nicolebears

and if you add 25, 27, and 48 they don't equal 90

6. kaylific

why would they equal 90?

7. nicolebears

right triangle equal 90 degrees

8. kaylific

you would have to use the Law of Cosine because you are given all 3 lengths

9. kaylific

those are the side lengths though and you don't just add them up to get 90 degrees

10. kaylific

@marcoduuuh have you learned Law of Cosine?

11. marcoduuuh

Noo! I didn't!

12. marcoduuuh

So the answer would be True right?

13. marcoduuuh

@kaylific

14. kaylific

umm im not sure i did the law of cosine and i got that it equaled 135 degrees

15. kaylific

I'm not sure lol

16. marcoduuuh

Ahhh. D:

17. bakonloverk

i think its true

18. marcoduuuh

Thanks!

19. marcoduuuh

It was false. Thanks everyone! (: