## sbuck98 one year ago I need help on #26:( I will award a medal!

1. sbuck98

2. welshfella

I'm not familiar with these 2 column proofs but basically because a || b the internal angles <1 and <4 , and <2 and <3 both add up to 180 degrees. So since we are given that <1 = <4 then <2 must be equal to <3.

3. zepdrix

|dw:1443390689054:dw|

4. zepdrix

5. sbuck98

so you can step me through this? @zepdrix

6. zepdrix

Hmm I'm not sure what would be the fastest way to finish this... I like welsh's idea of using the fact that we have two pairs of supplementary angles and doing some business with that. But maybe we have some trapezoid rule we can use to shorten it :o

7. zepdrix

thinking

8. sbuck98

also are you familar with other things in geometry? need help with other problems

9. zepdrix

Let's just use welsh's idea :)

10. zepdrix

|dw:1443391104222:dw|This is the reasoning that I would give.

11. zepdrix

|dw:1443391195749:dw|by the same reasoning

12. zepdrix

Since <1 and <4 are the same, hmm <2 and <3 must be the same... Bahh I dunno >.< There's probably a better way to do these last few steps... grr

13. zepdrix

Grr I wish jim was online :P

14. sbuck98

lol help me with these then!

15. sbuck98

16. sbuck98

@zepdrix

17. zepdrix

$\large\rm V=LWH$Notice that L is being multiplied by W and H. How do we undo multiplication? What is the opposite of multiplication?

18. sbuck98

divide

19. sbuck98

@zepdrix

20. Nnesha

|dw:1443398514837:dw|

21. Nnesha

good website to practice https://www.mathsisfun.com/geometry/parallel-lines.html

22. Nnesha

scroll down a little where u see *choose one * ^^^`