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## AngelDreamGurl 3 years ago PLEASE HELP

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1. thelight

what

2. AngelDreamGurl

3. precal

is J 130? If so then 3 is 50 degrees

4. precal

|dw:1334883920170:dw|

5. precal

A line is 180 degrees

6. inkyvoyd

Ok. Let me help...

7. inkyvoyd

First we need to determine properties of the quadrilaterals.

8. inkyvoyd

*classify the quadrilaterals.

9. inkyvoyd

Can you tell me which are trapezoids and which are parallelograms?

10. precal

3 and 1 are verical angles and are the same

11. AngelDreamGurl

13 are trap 24 are para

12. inkyvoyd

Alright, good.

13. inkyvoyd

Now what do we know about 2 and 4 since they are parallelograms?

14. inkyvoyd

(Adjacent angles are supplementary, and opposite angles are congruent in a parallelogram)

15. AngelDreamGurl

so how do i figure out

16. inkyvoyd

Well, angles next to each other in a parallelogram add up to 180 degrees. Angles across from each other have the same measure.

17. precal

|dw:1334884743964:dw|

18. precal

1 and 2 are vertical angles 3 and 4 are vertical angles 1+4 1+3 3+2 4+2 all add up to 180

19. precal

|dw:1334884808383:dw| I just made up that example

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