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Altitudes in Triangles
Author:
Kerri Shirey
Topic:
Triangles
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Coordinate Proofs for Parallelogram
G_11.06 Lengths in intersecting chords, secants, and tangents
Artwork by Daniel Linus Torres
Interior and Exterior Angle Sum of a Triangle
Parallelogram Properties
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Completing the square
Distance in the Coordinate Plane
h7n4&6
Circumcenter - 2019
Gold
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Constructions
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Isosceles Triangles
Ratios