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Consider XYZ in the figure below.

The perpendicular bisectors of its sides are TS, US, and VS. They meet at a single point S.

(In other words, S is the circumcenter of XYZ.)

Suppose VS=66, YU=86, and ZS =110.

Find XS, YZ, and VY.

Note that the figure is not drawn to scale.

Consider XYZ in the figure below. The perpendicular bisectors of its sides are TS-example-1
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Given that the perpendicular bisectors of the sides of AXYZ meet at a single point S, which is the circumcenter of the triangle, I can use the properties of the circumcenter to find the lengths XS, YZ, and VY.

To start, I can use the fact that the circumcenter of a triangle is equidistant from its vertices. Therefore, I can write:

SV = SY (since S is equidistant from V and Y)

SZ = SX (since S is equidistant from Z and X)

SV = VX (since S is equidistant from V and X)

SU = UY (since S is equidistant from U and Y)

From the given information, we know that VS = 66, YU = 86, and ZS = 110. I can use this information to solve for the unknown lengths.

To find XS, I can use the fact that SZ = SX. We know that ZS = 110, so:

XS = ZS = 110

To find YZ, I can first find VY by using the fact that SV = VX. I know that VS = 66, so:

VY = VS - SY = 66 - YU/2

Now I can use the fact that SU = UY to solve for YZ:

YZ = YU - 2UY/2 = YU - UY = 86 - (66 - VY) = 20 + VY

So, YZ = 20 + VY

Therefore, I still need to find the value of VY. We can use the fact that SV = SY and the equation we found for VY above to solve for it:

SV = SY

66 = VY + 86/2

66 = VY + 43

VY = 23

Therefore, we have:

XS = 110

YZ = 20 + VY = 43

VY = 23

So, XS = 110, YZ = 43, and VY = 23.

User Stamenkovski
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