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Geometry 8 Online
OpenStudy (anonymous):

"Find vertical angles, two parallel lines with a transversal that intersects them, or a perpendicular bisector in your everyday world. Take a picture of it. Then, create a given and prove statement for the figure. Finally, write a proof using at least one of the following theorems: -Vertical Angles - Corresponding Angles - Alternate Interior Angles - Equidistance of a Point on a Perpendicular Bisector" I have a picture i just don't understand what to write.. I'll post my picture.. I was doing the Vertical Angles one.

OpenStudy (anonymous):

OpenStudy (fibonaccichick666):

ok so let me dumb down the picture for math usage :)|dw:1421009705464:dw|

OpenStudy (anonymous):

how do i prove it?

OpenStudy (fibonaccichick666):

well, there isn't anything to prove

OpenStudy (fibonaccichick666):

you need to say something first, so you chose vertical angles, what does that theorem say?

OpenStudy (anonymous):

Vertical angles are always congruent

OpenStudy (fibonaccichick666):

ok, so you need to be given some angle you can apply that to, so, literally pick an angle

OpenStudy (anonymous):

i guess angle D and angle C

OpenStudy (fibonaccichick666):

well, only pick one for now

OpenStudy (fibonaccichick666):

but yea, those are a pair, so you are given the measure of angle D, what is the measure of angle C?

OpenStudy (anonymous):

Well for the sign the angles are all 90*

OpenStudy (fibonaccichick666):

more simple than that

OpenStudy (fibonaccichick666):

you don't need any actual measurements

OpenStudy (anonymous):

all the angles are the same?

OpenStudy (fibonaccichick666):

well, you don't know that for a fact

OpenStudy (fibonaccichick666):

so if you are only given angle D, what other angle do you know the measure of?

OpenStudy (anonymous):

C

OpenStudy (fibonaccichick666):

right, and how do you know that?

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