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- Area of Circles
- Quadrat_rollt_auf_Kreis1
- Inscribed Central Angle Property
- คณิตคิดเร็ว
- Take-Out Angles for Pentagon, Heptagon
- Construct the Orthocenter of the given triangle. Construct the 3 altitudes in the given triangle and find the point where all 3 altitudes intersect. Leave all construction marks. (Connect C w