Triangles: Theorems and Problems 16




Problem 493.
Right Triangle, Circumcircle, Perpendicular, Chord. 

Problem 489.
Parallelogram, Triangle, Quadrilateral, Area. 

Problem 488.
Triangle, Cevian, Concurrency, Circle, Circumcircle. 

Problem 482.
Triangle, Circumcircle, Incenter, Excenter, Midpoint, Cyclic Points. 

Problem 481.
Triangle, Altitude, Cevian, Perpendicular, Angle. 

Problem 480.
Triangle, Circle, Center, Altitude, Angle, Circumcenter. 

Problem 479.
Triangle, Cevians, Concurrency, Transversal, Proportion. 

Problem 478.
Triangle, Sides, Circumradius, Circumcenter, Circumcircle. 

Problem 477.
Parallelogram, Triangle, Quadrilateral, Area. 

Problem 476.
Triangle, Circumcenter, Circumcircle, Angles. 

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 469.
Isosceles triangle, Midpoint, Transversal, Congruence. 

Proposed
Problem 463.
Three Concentric Circles, Secant, Tangent, Triangle, Area. 

Proposed
Problem 459.
Right triangle, Squares, Distance, Measurement. 

Proposed
Problem 457.
Triangle, First Brocard Point, Congruent angles, Circle, Circumradius. 

Proposed
Problem 454.
Triangle, Incircle, Inradius, Tangent, Circle, Radius. 

Proposed
Problem 452.
Triangle, Circle, Tangent, Proportional Segments. 
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