I nailed it Mr. Nelson #11

Author:nelsone

The altitudes of any triangle meet at a single point called the ORTHOCENTER. (An altitude is the perpendicular line segment from a vertex of a triangle to the opposite side of the vertex.)

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apec
Untitled
Taylor Series for 1/(1 - x)
A Happy Polar Leaf

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ריבוע 1
Incenter of a triangle
Temari Ball #3
sin函數
Double Integral Regions - Example 2

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Matrices
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Isosceles Triangles
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