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Mathematics 19 Online
OpenStudy (anonymous):

Explain, using complete sentences, why an inscribed circle will only work within a regular polygon.

OpenStudy (anonymous):

Anyone?

OpenStudy (anonymous):

Hmmm, well if a polygon is not regular, than I suspect that one of the angles are not going to be equidistant from the center.

OpenStudy (anonymous):

I know for a circumscribed that the angles have to be supplementary

OpenStudy (anonymous):

Then, rather than using the angles, how about the midpoints between the angles?

OpenStudy (anonymous):

What about a trapezoid?

OpenStudy (anonymous):

Is it because they will the points will pass the points?

OpenStudy (anonymous):

I'm curious about this... why wouldn't you be able to inscribe circles for a trapezoid?

OpenStudy (anonymous):

I'm asking you

OpenStudy (anonymous):

Why don't you first define inscribe.

OpenStudy (anonymous):

Me?

OpenStudy (anonymous):

Yes

OpenStudy (anonymous):

It's when you make a circle inside of the polygon and the circles is a perfect circle

OpenStudy (anonymous):

It has to touch every side

OpenStudy (anonymous):

every side of the polygon must touch the circle

OpenStudy (anonymous):

Like this number 3

OpenStudy (anonymous):

What?

OpenStudy (anonymous):

|dw:1376206498895:dw|

OpenStudy (anonymous):

Consider the following picture a counter example, using your definition of inscribe.

OpenStudy (anonymous):

The polygon is clearly not regular and yet it can be inscribed into it.

OpenStudy (anonymous):

My bad I meant 5 or more

OpenStudy (anonymous):

sides

OpenStudy (anonymous):

|dw:1376206666115:dw|

OpenStudy (anonymous):

There it has 6 sides another counter example.

OpenStudy (anonymous):

How is that helping me

OpenStudy (anonymous):

Your question can't be answered, because its a false claim.

OpenStudy (anonymous):

I'm just confused on this topic and you are getting me more confused

OpenStudy (anonymous):

It's a question for my assignment

OpenStudy (anonymous):

You can't explain it, because it simply isn't true.

OpenStudy (anonymous):

I'll obviously get it wrong

OpenStudy (anonymous):

From the way your question is written its likely, you miss interpreted the assignment.

ganeshie8 (ganeshie8):

you mean a polygon with 5 sides or above, if its not regular, then inscribed circle is not possible... is that we're supposed to justify ?

OpenStudy (anonymous):

Yes

ganeshie8 (ganeshie8):

Or, the statement is like this :- Any regular polygon can have an inscribed circle ?

ganeshie8 (ganeshie8):

yeah the former statemetn looks false to me

OpenStudy (anonymous):

So The question that I have to answer has no answer?

ganeshie8 (ganeshie8):

not sure, I'll have to think a bit more..

OpenStudy (anonymous):

Yes, look at the counter examples for yourself, though I have a feeling your miss translating something, I don't think anyone would formally write out "an inscribed circle will only work within a regular polygon".

ganeshie8 (ganeshie8):

yeah ive never seen it before also... justifying below is easy. Any regular polygon can have an inscribed circle. but forming conclusion on your q as-it-is is a bit involved...

OpenStudy (anonymous):

I copied and pasted the question

OpenStudy (anonymous):

Six: Explain, using complete sentences, how you can determine whether or not a circle may circumscribe a quadrilateral. (5 points) Seven: Explain, using complete sentences, why an inscribed circle will only work within a regular polygon. (5 points

OpenStudy (anonymous):

Here's the question above too

OpenStudy (anonymous):

I already have the answer to that

OpenStudy (anonymous):

Just need 7

OpenStudy (anonymous):

lol who wrote that, your high school teacher?

ganeshie8 (ganeshie8):

i dont see 5 sides and above constrain in the q ?

OpenStudy (anonymous):

It was taught in the lesson

OpenStudy (anonymous):

No FLVS

OpenStudy (anonymous):

FLVS?

ganeshie8 (ganeshie8):

oh this is FLVS assignment... ? I have access to flvs geometry. this from module 5 is it ?

OpenStudy (anonymous):

What are you people talking about..

ganeshie8 (ganeshie8):

i can double check the actual q if u want

OpenStudy (anonymous):

module 5? flvs?

OpenStudy (anonymous):

Module 8 Lesson 7

OpenStudy (anonymous):

Online class

OpenStudy (anonymous):

what lesson

OpenStudy (anonymous):

where are you geting this stuff from

OpenStudy (anonymous):

Florida Virtual School

OpenStudy (anonymous):

is what FLVS stands for

OpenStudy (anonymous):

Not lesson 7 I meant lesson 3

OpenStudy (anonymous):

Well who ever wrote the question might have had something else in mind, but as it stands the claim is just false it looks like it was written by someone who doesn't speak English, particularly that bit about "will only work".

ganeshie8 (ganeshie8):

ok il go thru it and get back. but surely the question is incorrect.... but the context in which the q is asked can be different. move on to next q... :)

OpenStudy (agent0smith):

Here's another counterexample with 5 sides http://magoosh.com/gmat/files/2012/08/c4_img2.png

OpenStudy (anonymous):

That's my last one ;(

OpenStudy (anonymous):

It's Geometry Honors

OpenStudy (anonymous):

anyone?

OpenStudy (anonymous):

I got the answer guys

OpenStudy (anonymous):

It says this on FLVS Can an inscribed circle exist within an irregular polygon with four or more sides? No! Remember that in order for an inscribed circle to exist, each side must be a tangent to the circle. In other words, the circle must intersect each side of the polygon exactly one time at a 90° angle. In an irregular polygon, not all of these conditions are met. Therefore, inscribed circles will only exist in triangles or regular polygons with four or more sides. Why do you think this happens? What makes a triangle so special? Well, a triangle has three sides. That means there are only three points through which a circle must be drawn. When you increase the number of sides, you increase the number of points that must contain the circle. Just like you need only two points to draw a line, you need only three points to draw a circle

OpenStudy (anonymous):

@Jack191 @ganeshie8

OpenStudy (anonymous):

Sorry Im really pretty lazy now, I can't be asked to read that whole thing.

OpenStudy (anonymous):

Read the first paragraph

ganeshie8 (ganeshie8):

next dba, show the counter examples to your teacher and get clarity on the text... they may need to correct the material unless we all are grossly missing something...

OpenStudy (anonymous):

Okay

OpenStudy (anonymous):

My DBA is tomorrow

ganeshie8 (ganeshie8):

cool :) good luck !

OpenStudy (anonymous):

@ganeshie8 can you help me with something else?

ganeshie8 (ganeshie8):

sure ask, im glad to help if i can :)

OpenStudy (anonymous):

Or are you busy?

OpenStudy (anonymous):

Okay thanks

OpenStudy (anonymous):

Determine the delivery radius for your shop. Draw a point on a coordinate plane where your shop will be located. Create two different radii lengths from your shop, and construct the circles that represent each delivery area. How much area will each delivery radius cover? Write the equation for each circle created. Please show your work for all calculations.

ganeshie8 (ganeshie8):

i have time

OpenStudy (anonymous):

What is it asking?

OpenStudy (anonymous):

I don't understand

OpenStudy (anonymous):

8.07

OpenStudy (anonymous):

is the chapter

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