# Online Geometry: Parallel Lines, Theorems and Problems

## Parallel Lines, Page 2

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

Geometry Problem 734.
Triangle, Isosceles, Median, Parallel, Angle Bisector, Congruence, Midpoint.

Geometry Problem 715.
Triangle, Altitudes, Parallel, Circumcircle, Angle, Measurement.

Geometry Problem 714.
Triangle, Parallel, Cevians, Midpoints, Median, Ceva Theorem.

Geometry Problem 710.
Parallelogram, Midpoint, Diagonal, Collinear Points, Metric Relations, Triangle, Similarity, Congruence.

Geometry Problem 709.
Parallelogram, Midpoint, Diagonal, Metric Relations, Triangle.

Geometry Problem 702.
Triangle, Circumcircle, Parallel, Concyclic Points.

Geometry Problem 659.
Parallelogram, Parallel Lines, Collinear Points.

Geometry Problem 657.
Triangle, Incircle, Tangency Points, Parallel Lines, Congruence.

Geometry Problem 633
Triangle, Parallel Lines, Intersecting Lines.

Geometry Problem 628

Geometry Problem 625
Triangle, Parallel Lines, Congruence, Angle Bisector.

Geometry Problem 621
Three Rectangles, Diagonals, Centers, Angles.

Geometry Problem 616
Parallelogram, Diagonals, Intersecting Lines, Parallel Lines.

Geometry Problem 614
Parallelogram, Diagonals, Intersecting Lines, Parallel Lines.

Geometry Problem 611
Altitude of a Triangle, Perpendicular, Collinear Points, Parallel.

Geometry Problem 610
Intersecting Circles, Radius, Parallel, Common Tangent, Angle, 90 Degrees.

Problem 606
Isosceles Triangles, Perpendicular and Parallel Lines.

Problem 531.
Triangle, Angle Bisector, Midpoint, Parallel, Perimeter, Semiperimeter.

Problem 518.
Parallelogram, Five Squares, Centers, 45 Degrees, Measure.

Problem 494.
Circular Sector, 90 Degrees, Semicircle, Chord, Parallel.

Problem 492.
Cyclic Quadrilateral, Circle, Perpendicular, Side, Diagonal, Parallel.

Problem 489.

Problem 487.
Intersecting Circles, Area, Diameter, Parallel, 90 Degrees.

Problem 477.

Problem 475.
Tangent Circles, Secant, Tangent, Parallel.

Problem 474.
Parallelogram, Diagonal, Circle, Vertex.

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 438.
Tangent Circles, Diameter, Chord, Perpendicular, Congruence, Measurement, Parallel lines.

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

Proposed Problem 413.
Cyclic Quadrilateral, Orthocenter, Parallelogram, Concurrency, Congruence.

Proposed Problem 408.

Proposed Problem 402.
Hexagon, Triangle, Centroid, Parallel, Congruence, Similarity.

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

Proposed Problem 392.
Triangle, Parallel lines, Concurrent lines.

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