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Triangles

Lines in a triangle

• Bisector
• Altitude
• Median
• Perpendicular bisector

Points in a triangle

• Incentre
• Orthocentre
• Centroid
• Circumcentre
• Torricelli point

Special triangles

• Euler's triangle
• Leibniz's triangle
• Pascal's triangle
• Sierpiński's triangle

 

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