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Mathematics 25 Online
OpenStudy (anonymous):

Classify the figure in as many ways as possible. A.rectangle; square; quadrilateral; parallelogram; rhombus B. rectangle; square; parallelogram C.rhombus; quadrilateral; parallelogram D.square; rectangle; quadrilateral

OpenStudy (anonymous):

OpenStudy (mathstudent55):

Do you know what those terms mean?

OpenStudy (anonymous):

I belive it is D did you look on google

OpenStudy (anonymous):

Yes i do :)

OpenStudy (mathstudent55):

A quadrilateral is a 4 sided polygon. We can agree this is a quadrilateral.

OpenStudy (anonymous):

what did it say do you even know the name of the shape

OpenStudy (mathstudent55):

I can tell you that D is not the answer.

OpenStudy (anonymous):

Ok

OpenStudy (mathstudent55):

A quadrilateral with 4 congruent sides is a rhombus. Is this a rhombus?

OpenStudy (anonymous):

what grade are you in Tillie<3

OpenStudy (anonymous):

oh well does any body know how to do 6th grade work?

OpenStudy (mathstudent55):

@Tillie♥ You asked the question. Are you interested in an answer?

OpenStudy (anonymous):

Yes im trying to figure out what it might be :)

OpenStudy (anonymous):

@mathstudent55 would it be A?

OpenStudy (anonymous):

@ Tillie<3 Do you know how to do 6th grade math

OpenStudy (anonymous):

Ya Why?

OpenStudy (anonymous):

nevermind

OpenStudy (mathstudent55):

I'm not telling you which one it is. Instead, if you answer my questions, you'll get to the answer and you'll understand the answer.

OpenStudy (anonymous):

Ok sorry umm yes

OpenStudy (mathstudent55):

Look at the figure. You see the little mark on each side (not the triangles in 2 sides)? What do they mean?

OpenStudy (anonymous):

wht are thay

OpenStudy (mathstudent55):

No need to apologize. Let's just continue. So far we know it is a quadrilateral since it has 4 sides. The little marks mean all sides are congruent. That means all sides have the same length. A quadrilateral with 4 congruent sides is a rhombus. Now we know this is a quadrilateral and a rhombus.

OpenStudy (mathstudent55):

A parallelogram is a quadrilateral that has two pairs of opposite sides that are parallel.

OpenStudy (mathstudent55):

The mark for showing lines are parallel is a little triangle or a little arrow.

OpenStudy (mathstudent55):

The picture is showing that the top side and the bottom side are parallel. That's why it has those little triangles on those sides.

OpenStudy (mathstudent55):

Remember, the definition of a parallelogram is that it is a quadrilateral with both pairs of sides parallel. We only know that one pair of sides is parallel.

OpenStudy (anonymous):

@mathstudent55 can you help me or no

OpenStudy (mathstudent55):

There is a way of showing that a quadrilateral is a parallelogram with only one pair of sides known to be parallel. If one pair of sides is parallel and congruent, then it is a parallelogram.

OpenStudy (mathstudent55):

In fact we know that. All sides are congruent, so the top and bottom sides are congruent. In addition, the top and bottom sides are also parallel, so this is a parallelogram. Now we know this much: Quadrilateral, rhombus, parallelogram

OpenStudy (anonymous):

ok That make sense

OpenStudy (mathstudent55):

Now let's deal with a rectangle. A rectangle is a parallelogram with 4 right angles. We are not told there are any right angles here, so we can't conclude this is a rectangle. What about a square? A square is a parallelogram and a rhombus, but a square also needs 4 right angles. We don't have right angles here, so we can't conclude this is a square.

OpenStudy (mathstudent55):

All we can conclude is what we already have: Quadrilateral, rhombus, parallelogram

OpenStudy (anonymous):

So it is C!

OpenStudy (mathstudent55):

correct

OpenStudy (anonymous):

Thank you so much for helping i understand better now :)

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