Difference between revisions of "User:Jonjoseph"

Line 26: Line 26:
 
label('$P$', P, E);
 
label('$P$', P, E);
 
label('$C$', O, W);  
 
label('$C$', O, W);  
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</asy>
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 +
Problem from class:
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 +
<asy>
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import olympiad; import cse5; import geometry; size(150);
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defaultpen(fontsize(10pt));
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defaultpen(0.8);
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dotfactor=4;
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pair X = origin;
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pair Y = (3,0);
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pair W = X+dir(120);
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pair Z = Y+dir(120);
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pair T = (0,2);
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pair S = T+dir(120);
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pair U = (3,2);
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pair V = U+dir(120);
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label("$X$",X,SW);
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label("$W$",W,SW);
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label("$T$",T,NE);
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label("$S$",S,NW);
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label("$Z$",Z,SW);
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label("$Y$",Y,SE);
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label("$U$",U,E);
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label("$V$",V,NE);
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draw(W--X--Y);
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draw(Y--Z--W,dashed);
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draw(S--T--U--V--cycle);
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draw(X--T);
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draw(W--S);
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draw(Y--U);
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draw(Z--V,dashed);
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draw(W--U,dashed);
 
</asy>
 
</asy>

Revision as of 20:33, 24 October 2013

[asy] pair O = (0,0); pair P = (2,0); draw(unitcircle); dot(O); dot(P); label('$P$', P, E); label('$C$', O, W); [/asy]

Given a circle with center $C$ and a point $P$ that lies outside the circle, bisect circle $C$ with a second circle centered at $P$.

[asy] pair O = (0,0); pair P = (2,0); pair A = (0,1); pair B = (0, -1); draw(unitcircle); draw(A--B, red); draw(P--O, red); draw(circle(P, 2.24)); dot(O); dot(P); dot(A); dot(B); label('$P$', P, E); label('$C$', O, W);  [/asy]

Problem from class:

[asy] import olympiad; import cse5; import geometry; size(150); defaultpen(fontsize(10pt)); defaultpen(0.8); dotfactor=4;  pair X = origin; pair Y = (3,0); pair W = X+dir(120); pair Z = Y+dir(120); pair T = (0,2); pair S = T+dir(120); pair U = (3,2); pair V = U+dir(120);  label("$X$",X,SW); label("$W$",W,SW); label("$T$",T,NE); label("$S$",S,NW); label("$Z$",Z,SW); label("$Y$",Y,SE); label("$U$",U,E); label("$V$",V,NE);  draw(W--X--Y); draw(Y--Z--W,dashed); draw(S--T--U--V--cycle); draw(X--T); draw(W--S); draw(Y--U); draw(Z--V,dashed); draw(W--U,dashed); [/asy]