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Mathematics 7 Online
OpenStudy (anonymous):

Math help @e.mccormick

OpenStudy (e.mccormick):

/wave hey there.

OpenStudy (anonymous):

Heya xD

OpenStudy (e.mccormick):

OK, that says it is a parallelogram. So for starters, what does that tell us about it?

OpenStudy (anonymous):

It has two parallel sides

OpenStudy (e.mccormick):

Missing a word there. Sets. A trapezoid has two parallel sides. A parallelogram has two sets of parallel sides.

OpenStudy (anonymous):

Oh okay

OpenStudy (e.mccormick):

So the top is parallel to the bottm and sides to each other. That means the angles have relationships based on prallel lines.

OpenStudy (e.mccormick):

Remember any rules, like interior or exterior angle rules for parallel lines and a line that intersects them?

OpenStudy (anonymous):

I think so

OpenStudy (e.mccormick):

OK. hen lets do a quick diagram and see if you can figure out what they have asked. |dw:1367625635170:dw|

OpenStudy (e.mccormick):

/cheer

OpenStudy (anonymous):

Awesommeee, and I didnt guess this time!

OpenStudy (e.mccormick):

OK, so only one missing this time.

OpenStudy (e.mccormick):

Hehe. We just talked about this at the evry start of the last problem! So yah.

OpenStudy (anonymous):

Lol so I got it correct?

OpenStudy (e.mccormick):

Yep. That was what we were talking about with the two sets of parallel sides. 1) uses the first set and 3) uses the second set.

OpenStudy (e.mccormick):

Well, if it tiles together in there somewhere, all the better. More chances to remember it.

OpenStudy (e.mccormick):

Yes! They bisect each other, so 7.

OpenStudy (e.mccormick):

Hehe. Well, I think you relaxed a bit, and that always helps.

OpenStudy (e.mccormick):

Yep. They are intersecting parallel lines, so each segment is the same measure.

OpenStudy (e.mccormick):

OK, do you know how to go about this one?

OpenStudy (e.mccormick):

Well, start with this. How much are all the angles in a quadrilateral? I mean, like the three angles in a triangle add up to 180. How much do all 4 in a quadrilateral add up to?

OpenStudy (e.mccormick):

Well, lets start with a square. So each angle is 90 degrees. Right? And there are four of them.

OpenStudy (e.mccormick):

Yes. Now, lets see what happens when we make the square a different parallelogram.|dw:1367626943959:dw|

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