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Mathematics 21 Online
OpenStudy (anonymous):

Help me please!!! I can MEDAL and FAN if you want. I am in a bind I have a bunch of geometry questions on a study guide that I do not know.

OpenStudy (anonymous):

OpenStudy (anonymous):

I chose D

OpenStudy (anonymous):

If it looks like I am not here just know I am here my comp is wierd.

OpenStudy (anonymous):

what about B

OpenStudy (anonymous):

can you explain why u think it may be b?

OpenStudy (anonymous):

first you find mid points. can you show me coordinates of D by mid point formula?

OpenStudy (anonymous):

no I dont know what the midpoint formula is I never memorized it.

OpenStudy (anonymous):

\[x=\frac{ x _{1}+x _{2} }{ 2 }\]

OpenStudy (anonymous):

so I use A and B ?

OpenStudy (anonymous):

so D would be 4?

OpenStudy (anonymous):

|dw:1420933697605:dw|

OpenStudy (anonymous):

|dw:1420934051072:dw|

OpenStudy (anonymous):

Oh so its (4,5)

OpenStudy (anonymous):

correct ,similarly find the coordinates of E

OpenStudy (anonymous):

okay I see how to do this formula now and can you explain why you think B is the correct answer though?

OpenStudy (anonymous):

find the slope pf DE do you know the formula/

OpenStudy (anonymous):

yeah m=y2-y1/x2-x1

OpenStudy (anonymous):

find the slope of DE

OpenStudy (anonymous):

then slope of AC

OpenStudy (anonymous):

great work in here @kyley_bear

OpenStudy (anonymous):

you see it matched option B

OpenStudy (anonymous):

I got -2/1 or just -2. and thanks @Noland__DeWitte

OpenStudy (anonymous):

welcome

OpenStudy (anonymous):

third step is siopes are equal then lines are parallel.

OpenStudy (anonymous):

okay!

OpenStudy (anonymous):

fourth step is find DE and AB by distance formula.

OpenStudy (anonymous):

do you know the distance formula?

OpenStudy (anonymous):

I have another question I figured out the rest of the first one.

OpenStudy (anonymous):

I chose C. but wasnt sure on this one.

OpenStudy (anonymous):

what about A if opposite lines of a quadrilateral are parallel,then it is a parallelogram.

OpenStudy (anonymous):

ok that makes more sense, Okay the next one I chose B. If a polygon has three sides, it is a triangle. If an angle of a triangle measures 90° it is a right triangle. Beth constructed a triangle in the geometry class. Based on the given statements, which is a valid argument? It can be concluded that Beth drew a scalene triangle. It can be concluded that Beth drew a right triangle. It cannot be concluded that Beth drew a polygon with three sides. It cannot be concluded that Beth drew a triangle with an angle measure of 90°.

OpenStudy (anonymous):

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