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What are the properties of a triangle?

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The altitude of a triangle is the perpendicular from the base to the opposite vertex. (The base may need to be extended). Since there are three possible bases, there are also three possible altitudes. read more

Perpendicular bisector of the triangle is a perpendicular line that crosses through midpoint of the side of the triangle. The three perpendicular bisectors are worth noting for it intersects at the center of the circumscribing circle of the triangle. read more

Polygons: Properties of Triangles: Sum of the Angles of a Triangle: The sum of the angles of a triangle is 180 degrees. ALWAYS! Regular Triangles - Equilateral Triangles: The properties of equilateral triangles: All sides are the same length (congruent) and all interior angles are the same size (congruent). read more

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