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Circumcenter Problem: Geometry

Please help me find the answer and explain why how you got it. Ive been trying to solve it for more than an hour.

Circumcenter Problem: Geometry Please help me find the answer and explain why how-example-1
User Hurelu
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The value of x for the circumscribed triangle is equal to 6 using length equidistant from the circumcenter N.

The circumcenter of a triangle is the point where the perpendicular bisectors of the sides of the triangle intersect. This point is equidistant from the three vertices of the triangle and is the center of the circumcircle, which is the circle passing through all three vertices of the triangle.

Considering the right triangle NHC, the value of x for radius NH and length HC can be derived using Pythagoras rule as follows:

(x - 1)² + (x + 6)² = 13²

x² - 2x + 1 + x² + 12x + 36 = 169

2x² + 10x + 37 = 169

2x² + 10x - 132 = 0

{divide through by 2;

x² + 5x - 66 = 0

factorize by grouping;

x² + 11x - 6x - 66 = 0

x(x + 11) -6(x + 11) = 0

(x - 6)(x + 11) = 0

x = 6 or x = -11

Therefore, we say that the value of x for the circumscribed triangle is equal to 6

Complete question:

Find the value of x for the circumscribed triangle ∆ABC with circumcenter N.

Circumcenter Problem: Geometry Please help me find the answer and explain why how-example-1
User Maurice Kayser
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8.1k points