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Sunshine447
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Can someone please help me "Inscribed circles to triangles"? I watched a video, but it still doesn't make sense..... The video skips a lot of the steps and I'm not sure why...... Please help me!
 one year ago
 one year ago
Sunshine447 Group Title
Can someone please help me "Inscribed circles to triangles"? I watched a video, but it still doesn't make sense..... The video skips a lot of the steps and I'm not sure why...... Please help me!
 one year ago
 one year ago

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CliffSedge Group TitleBest ResponseYou've already chosen the best response.0
A circle inscribed in a triangle?
 one year ago

Sunshine447 Group TitleBest ResponseYou've already chosen the best response.0
I guess so
 one year ago

CliffSedge Group TitleBest ResponseYou've already chosen the best response.0
Like this? dw:1349651230207:dw
 one year ago

Sunshine447 Group TitleBest ResponseYou've already chosen the best response.0
@CliffSedge yeah, that's what the lesson shows
 one year ago

MrMoose Group TitleBest ResponseYou've already chosen the best response.0
dw:1349651442977:dw
 one year ago

MrMoose Group TitleBest ResponseYou've already chosen the best response.0
the center of the circle is equidistant from all of the sides
 one year ago

Sunshine447 Group TitleBest ResponseYou've already chosen the best response.0
I guess I have to get perp bisectors to do it?
 one year ago

Sunshine447 Group TitleBest ResponseYou've already chosen the best response.0
@MrMoose
 one year ago

MrMoose Group TitleBest ResponseYou've already chosen the best response.0
to do what?
 one year ago

CliffSedge Group TitleBest ResponseYou've already chosen the best response.0
Not bisectors, but yes, you'll need perpendiculars.
 one year ago

Sunshine447 Group TitleBest ResponseYou've already chosen the best response.0
to make the inscribed circle
 one year ago

Sunshine447 Group TitleBest ResponseYou've already chosen the best response.0
im just reading the lesson and it says bisectors..... im so confused
 one year ago

CliffSedge Group TitleBest ResponseYou've already chosen the best response.0
If you want to make the circle, then you need the intersection of angle bisectors.
 one year ago

Sunshine447 Group TitleBest ResponseYou've already chosen the best response.0
angle bisectors?
 one year ago

Sunshine447 Group TitleBest ResponseYou've already chosen the best response.0
If I post an assignment can you help me with it specifically?
 one year ago

MrMoose Group TitleBest ResponseYou've already chosen the best response.0
dw:1349651716141:dw
 one year ago

MrMoose Group TitleBest ResponseYou've already chosen the best response.0
I guess so
 one year ago

Sunshine447 Group TitleBest ResponseYou've already chosen the best response.0
there are 7 parts, so ill post them one at a time
 one year ago

Sunshine447 Group TitleBest ResponseYou've already chosen the best response.0
One: Construct a circle and a tangent to the circle using a compass and straightedge. (4 points) Draw three random points on your paper. Construct the circle through these three points. Determine the circle's center. Construct a tangent to the circle, using one of the original three points as the point of tangency.
 one year ago

MrMoose Group TitleBest ResponseYou've already chosen the best response.0
What do you need help with?
 one year ago

CliffSedge Group TitleBest ResponseYou've already chosen the best response.0
Oh, you're doing the reverse. You're starting with the circle, then circumscribing a triangle around it.
 one year ago

MrMoose Group TitleBest ResponseYou've already chosen the best response.0
I am unsure as to how I can help
 one year ago

Dido525 Group TitleBest ResponseYou've already chosen the best response.0
dw:1349651958633:dw
 one year ago

Dido525 Group TitleBest ResponseYou've already chosen the best response.0
I guess it's like that.
 one year ago

Sunshine447 Group TitleBest ResponseYou've already chosen the best response.0
im not really sure, but ill do something like that for part one, thanks! now part 2...
 one year ago

Sunshine447 Group TitleBest ResponseYou've already chosen the best response.0
Two: Construct a circumscribed circle about a regular polygon using a compass and straightedge. (4 points) Choose a regular polygon from which you will draw a circumscribed circle. triangle  square  pentagon  hexagon Construct the circumscribed circle.
 one year ago

Dido525 Group TitleBest ResponseYou've already chosen the best response.0
dw:1349652171056:dw
 one year ago

Dido525 Group TitleBest ResponseYou've already chosen the best response.0
Like that I guess...
 one year ago

Sunshine447 Group TitleBest ResponseYou've already chosen the best response.0
how is the circle made?
 one year ago

CliffSedge Group TitleBest ResponseYou've already chosen the best response.0
"Circumscribed circle" means the circle is on the outside of the polygon.
 one year ago

Dido525 Group TitleBest ResponseYou've already chosen the best response.0
It says a circle inside any of those polygons. I chose a square.
 one year ago

Dido525 Group TitleBest ResponseYou've already chosen the best response.0
@CliffSedge . Ahh yes. I get that mixes up a lot.
 one year ago

phi Group TitleBest ResponseYou've already chosen the best response.1
This seems pretty easy to follow for a circle in a triangle http://www.mathsisfun.com/geometry/constructtriangleinscribe.html notice the instructions below the "action figure"
 one year ago

Dido525 Group TitleBest ResponseYou've already chosen the best response.0
dw:1349652319786:dw
 one year ago

Dido525 Group TitleBest ResponseYou've already chosen the best response.0
Like that then I suppose?
 one year ago

CliffSedge Group TitleBest ResponseYou've already chosen the best response.0
The radius of the circle is the distance from a vertex of the polygon to the polygon's center.
 one year ago

phi Group TitleBest ResponseYou've already chosen the best response.1
For a circle through 3 points http://www.mathsisfun.com/geometry/constructcircle3pts.html
 one year ago

Sunshine447 Group TitleBest ResponseYou've already chosen the best response.0
@phi do you have a link for circumscibing too? that helped sooo much
 one year ago

phi Group TitleBest ResponseYou've already chosen the best response.1
http://www.mathsisfun.com/geometry/constructtrianglecircum.html
 one year ago

Sunshine447 Group TitleBest ResponseYou've already chosen the best response.0
thanks sooo much @phi can you help me with the next part too?
 one year ago

Sunshine447 Group TitleBest ResponseYou've already chosen the best response.0
Three: Construct an inscribed circle within a regular polygon using a compass and straightedge. (4 points) Choose a regular polygon from which you will draw an inscribed circle. Note: The polygon you choose must be different from the polygon you chose in problem 2. triangle  square  pentagon  hexagon Construct the inscribed circle.
 one year ago

phi Group TitleBest ResponseYou've already chosen the best response.1
I would pick a square, and follow the same instructions as for the triangle. Bisect 2 angles and find the intersection to get the center of the circle. draw a perpendicular from the center to 1 side of the square to find the radius
 one year ago

Sunshine447 Group TitleBest ResponseYou've already chosen the best response.0
Okay, how about Six: Explain, using complete sentences, how you can determine whether or not a circle may circumscribe a quadrilateral.
 one year ago

phi Group TitleBest ResponseYou've already chosen the best response.1
Here is the professional answer: A quadrilateral is cyclic (i.e. may be inscribed in a circle) if one side subtends congruent angles at the two opposite vertices.
 one year ago

phi Group TitleBest ResponseYou've already chosen the best response.1
How about opposite angles of a cyclic quadrilateral are supplementary (sum to 180º)
 one year ago

Sunshine447 Group TitleBest ResponseYou've already chosen the best response.0
okay that makes much more sense lol thanks! Seven: Explain, using complete sentences, why an inscribed circle will only work within a regular polygon.
 one year ago

Sunshine447 Group TitleBest ResponseYou've already chosen the best response.0
And, is there a video for this? Construct a circle and a tangent to the circle using a compass and straightedge. (4 points) Draw three random points on your paper. Construct the circle through these three points. Determine the circle's center. Construct a tangent to the circle, using one of the original three points as the point of tangency.
 one year ago

phi Group TitleBest ResponseYou've already chosen the best response.1
Construct a circle and a tangent to the circle using a compass and straightedge. draw the circle. draw a line from the center through the circle. mark the intersection. construct a perpendicular to the line through that point.
 one year ago

phi Group TitleBest ResponseYou've already chosen the best response.1
Draw three random points on your paper. Construct the circle through these three points. For a circle through 3 points http://www.mathsisfun.com/geometry/constructcircle3pts.html
 one year ago

Sunshine447 Group TitleBest ResponseYou've already chosen the best response.0
thanks!
 one year ago

phi Group TitleBest ResponseYou've already chosen the best response.1
Determine the circle's center. I think you have to do this do construct the circle in the first place. Construct a tangent to the circle, using one of the original three points as the point of tangency. This is the same problem as the first one: Construct a circle and a tangent to the circle using a compass and straightedge.
 one year ago
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