Paralogic Triangles
At the points where a line cuts the sides of a Triangle 
, perpendiculars to the sides are drawn,forming a Triangle 
similar to the given Triangle. The two triangles are also in perspective. One point of intersection of their Circumcircles is the Similitude Center, and the other is thePerspective Center. The Circumcircles meet Orthogonally.
References
Johnson, R. A. Modern Geometry: An Elementary Treatise on the Geometry of the Triangle and the Circle. Boston, MA: Houghton Mifflin, pp. 258-262, 1929.
- Minimal Surface
- Minimax Approximation
- Minimax Polynomial
- Minimax Theorem
- Minimum
- Minkowski-Bouligand Dimension
- Minkowski Convex Body Theorem
- Minkowski Geometry
- Minkowski-Hlawka Theorem
- Minkowski Integral Inequality
- Minkowski Measure
- Minkowski Metric
- Minkowski Sausage
- Minkowski Space
- Minkowski Sum
- Minkowski Sum Inequality
- Minor
- Minor Axis
- Minor Graph
- Minus
- Minus or Plus
- Minus Sign
- Minute
- Miquel Circles
- Miquel Equation