Geometry & Triangle Centers

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Last updated 8:31 PM on 5/17/26
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12 Terms

1
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Pythagorean Theorem

a²+b²=c²

2
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Triangle Angle Sum

m∠A+m∠B+m∠C=180°

3
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Exterior Angle Theorem

exterior angle=sum of remote interior angles

4
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Circumcenter

intersection of perpendicular bisectors

5
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Incenter

intersection of angle bisectors

6
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Centroid

intersection of medians

7
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Orthocenter

intersection of altitudes

8
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Centroid Ratio

median divided in 2:1 ratio

9
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Median

vertex to midpoint of opposite side

10
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Altitude

vertex perpendicular to opposite side

11
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Perpendicular Bisector

line perpendicular through midpoint

12
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Angle Bisector

divides angle into two congruent angles