


Online Geometry: Areas, Theorems and Problems  Page 3




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

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

Proposed Problem 280.
Quadrilateral, Perpendiculars, Area of Squares. 

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

Proposed Problem 252.
Rectangle, isosceles right triangle, square, area.


Proposed Problem 251.
Parallelogram, sides, diagonals, squares, areas.


Proposed Problem 248.
Napoleon's Theorem III. Inner and outer Napoleon triangles, Area. 

Proposed Problem 212. 120 Degree Triangle, Equilateral triangles,
Areas. 

Proposed Problem 211. 60 Degree Triangle, Equilateral triangles,
Areas. 

Problem 206. Area of a Right Triangle, Inradius, and
Exradius relative to the hypotenuse. 

Proposed Problem 205. Right Triangle Area, Exradii relatives to legs
or catheti. 

Proposed Problem 197. Area of a
Triangle, Side, Inradius, and Exradius. 

Proposed Problem 196. Triangle,
Inradius and Exradii Formula. 

Proposed Problem 195. Area of a
Triangle, Inradius, Exradii. 

Proposed Problem 194. Area of a
Triangle, Semiperimeter, Exradius. 

Proposed Problem 193. Area of a
Triangle, Semiperimeter, Inradius. 

Proposed Problem 192. Circle,
Diameter, Chord, Perpendicular, Triangle, Area. 

Proposed Problem 191. Triangle,
Altitudes, Orthocenter, Squares, Areas. 

Proposed Problem 180. Circles
Tangent Externally, Common External Tangents, Areas. 

Proposed Problem 178.
Quadrilateral, Trisection of sides, Area. 

Proposed Problem 177.
Parallelogram with Midpoints, Triangles, Areas. 

Proposed Problem 176.
Quadrilateral with Midpoints, Triangles, Areas. 

Proposed Problem 175.
Quadrilateral with Midpoints, Areas. 

Proposed Problem 174.
Quadrilateral with Midpoints, Triangles, Areas. 

Proposed Problem 173.
Quadrilateral with Midpoints, Triangles, Areas. 

Proposed Problem 172. Trapezoid,
Midpoints, Quadrilaterals, Areas. 

Proposed Problem 171. Trapezoid,
Midpoints, Triangles, Areas. 

Proposed Problem 170. Trapezoid,
Midpoint, Triangle, Area. 

Proposed Problem 169.
Parallelogram, Interior and Exterior Points, Diagonals, Pentagon,
Triangles, Areas. 

Proposed Problem 168.
Parallelogram, Diagonal, Triangles, Pentagon, Areas. 

Proposed Problem 167.
Parallelogram, Diagonal, Triangles, Areas. 

Proposed Problem 166.
Parallelogram, Diagonal, Triangles, Areas. 

Proposed Problem 165.
Parallelogram, Diagonal, Triangles, Areas. 

Proposed Problem 164.
Parallelogram, Trapezoid, Diagonal, Triangles, Areas. 
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