


Plane Geometry: Area of a triangle, Theorems
and Problems  Table of Content  Page 2




Geometry Problem
619
Triangle Area, 30 Degrees, Incircle, Incenter, Tangent. 

Geometry Problem
618
Triangle Area, 60 Degrees, Incircle, Incenter, Tangent. 

Geometry Problem
617
Right Triangle Area, Incircle, Incenter, Tangent, 90 Degrees. 

Problem
579.
Quadrilateral, Diagonals, Triangles, Areas. 

Problem
558.
Quadrilateral, Trisection, Sides, Wittenbauer Parallelogram, Area, Auxiliary Lines. 

Problem
557.
Quadrilateral, Midpoints, Sides, Varignon Parallelogram, Area, Auxiliary Lines. 

Problem
545.
Acute Triangle, Squares, Altitudes, Area, Measure. 

Problem
540.
Right Triangle, Square, Parallel, Perpendicular, Dissection, Area, Pythagoras. 

Problem
539.
Right Triangle, Square, Parallel, Perpendicular, Dissection, Area, Pythagoras. 

Proposed Problem 433.
Quadrilateral, Triangle, Area, Proportion, Measurement, Similarity. 

Proposed Problem 416.
Triangle, Cevians, Trisectors, Area. 

Proposed Problem 401.
Area, Triangle, Angle bisector, Circumcircle, Perpendicular bisector,
Congruence. 

Proposed Problem 371.
Square, Inscribed circle, Triangle, Area. 

Proposed Problem 364.
Obtuse triangle, Congruence, Circles, Diameter, Curvilinear triangle,
Area. 

Proposed Problem 360.
Area of a triangle, Curvilinear triangles, Circles, Diameters. 

Proposed Problem 357.
Square, Exterior point, Triangles, Area. 

Proposed Problem 356.
Square, Point inside, Triangles, Area. 

Proposed Problem 322.
Square, Inscribed circle, Tangent, Triangle area. 

Proposed Problem 273.
Triangle, Perpendiculars, Area of Squares. 
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