


Online Geometry: Area of a Parallelogram, Theorems and Problems  Table of
Content




Parallelogram
Definition. 

Geometry
Problem 1494.
Parallelogram, Midpoints, Octagon, Areas. 

Geometry Problem 1467.
Square, Rectangle, Triangle, Area. 

Geometry Problem 1463.
Parallelogram, Interior Point, Opposite Triangles with Equal Sum of Areas.
Stepbystep Illustration using GeoGebra. 

Geometry Problem 1424. Triangle, Parallelogram, Trapezoid, Area, Diagonal, Measurement. 

Geometry Problem 1381. Parallelogram, Exterior Point, Triangle, Area. 

Geometry Problem 1279.
Parallelogram, Midpoint, Triangle, Area, 3/10. 

Geometry Problem 854
Triangle, Parallel lines, Parallelogram, Areas, Similarity, Concurrent lines. 

Geometry Problem 771
Area of a Parallelogram, Star, Pentagon, Triangles. 

Geometry Problem
604
Area of a
Parallelograms, Triangle, Trapezoid, Area. 

Problem
583.
Quadrilateral, Diagonals, Circumcenters, Parallelogram, Octagon, Areas. 

Problem 489.
Parallelogram, Triangle, Quadrilateral, Area. 

Problem
477.
Parallelogram, Triangle, Quadrilateral, Area. 

Problem 473.
Triangle, Parallel, Side, Parallelogram, Area, Similarity. 

Problem 472.
Triangle, Parallel, Side, Parallelogram, Area, Similarity. 

Problem 471.
Triangle, Parallel, Side, Concurrency, Area, Similarity. 

Problem 470.
Triangle, Parallel, Side, Parallelogram, Area, Similarity. 

Proposed
Problem 398.
Parallelogram, Area, Similarity, Congruence. 

Proposed Problem 396.
Square, Angle Trisectors, Congruence, Area. 

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


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

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.


Proposed Problem 162.
Parallelogram, Triangles, Areas.


Proposed Problem 161.
Parallelogram, Midpoints, Octagon, Areas.


Proposed Problem 146. Varignon's
Theorem: Quadrilateral, Midpoints, Parallelogram, Area, Perimeter. 

Varignon and Wittenbauer parallelograms. Quadrilateral: midpoints and
trisection points of the edges, Area 1/2, 8/9.







