Online Geometry: Trapezoid, Theorems and Problems

Trapezoid, Theorems and Problems- Index

Trapezoid Definition

Median of a Trapezoid, Theorems and Problems. Index.

Geometry Problem 1567: Finding Tangent Distances in a Circumscribed Isosceles Trapezoid.

Geometry Problem 1560: Trapezoid ABCD: Unlocking Angle Secrets at G and H.

Geometry Problem 1548: Exploring Segment DE Length in Triangle ABC with a 45-Degree Angle and Intersecting Altitudes

Geometry Problem 1543: Calculating the Area of Quadrilateral ABED in a Square with a Side Length of 20 and an Intersecting Arc.

Geometry Problem 1519 and a Thematic Poem.
Discover the Length of a Segment in a Parallelogram using Midpoints and Parallel Lines.

Geometry Problem 1513 and a Thematic Poem.
Solving the base in a Right Trapezoid with Double Angle and Sum of Two Sides. Difficulty Level: High School.

Geometry Problem 1509 and Poem.
Congruence of Triangles in a Trapezoid and a Square, Measurement. Difficulty Level: High School.

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

Geometry Problem 1192
Trapezoid, Triangle, Diagonal, Midpoint, Area, Parallel.

Geometry Problem 1188
Triangle, Parallelogram, Parallel Lines, Trapezoid, Area.

Geometry Problem 1031.
Trapezoid, Intersecting Circles, Common Chord, Tangent Line, Midpoint, Parallel Lines.

Geometry Problem 1006.
Tangent Circles, Common External Tangent, Bicentric Trapezoid, Incenter, Circumcenter.

Geometry Problem 994.
Trapezoid, Midpoints of the bases, Concurrent Lines.

Geometry Problem 863
Circumscribed trapezoid, Inscribed Circle, Tangent, Metric Relations.

Geometry Problem 862:
Trapezoid, Parallel, Equal Areas, RMS, Root Mean Square
.

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

Geometry Problem 747.
Trapezoid, Diagonals, Parallel, Bases, Midpoint, Similarity, Harmonic Mean, Metric Relations.

Geometry Problem 743.
Trapezoid, Triangle, Perpendicular, Parallel, Angle

Problem 529.
Right Trapezoid, Circle, Diameter.

Proposed Problem 432.
Trapezoid, Parallel, Measurement, Similarity, Transversal.

Proposed Problem 397.
Triangle, Altitude, Midpoints, Trapezoid, Congruence.

Proposed Problem 337.
Isosceles Trapezoid, Angle bisector, Parallel, Concyclic points.

Proposed Problem 313.
Circle, Chord, Tangent, Perpendicular, Geometric Mean.

Proposed Problem 230. Triangle, Midpoints, Transversal, Perpendicular lines.  

Proposed Problem 229. Triangle, Centroid, Transversal, Perpendicular lines.  

Proposed Problem 228. Triangle, Midpoints, Exterior line, Perpendiculars lines.  

Proposed Problem 227. Triangle, Centroid, Exterior line, Perpendicular lines.  

Proposed Problem 226. Triangle, Centroid, Perpendiculars.  

Proposed Problem 185. Trapezoid, Triangles and Angles.  

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

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

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

Proposed Problem 163. Trapezoid, Diagonals, Triangles, Areas.  

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