Triangles: Theorems and Problems 17




Proposed
Problem 451.
Triangle, Median, Congruence, Proportional Segments. 

Proposed
Problem 450.
Triangle, Median, Cevian, Congruence, Proportional Segments. 

Proposed
Problem 447.
Complete Quadrilateral, Inradii, Exradii, Sides. 

Proposed
Problem 445.
Three Tangent Circles, Tangency Points, Circumradius. 

Proposed
Problem 442.
Triangle, Median, Cevian, Transversal, Congruent Angles. 

Proposed
Problem 441.
Quadrilateral, Triangle, Area, Proportion, Measurement, Similarity. 

Proposed
Problem 440.
Triangle, Incircle, Incenter, Angle Bisector, Tangency Points, Circle, Angles. 

Proposed
Problem 439.
Isosceles triangle, Cevian, Incenter, Angles, Circle. 

Proposed
Problem 435.
Triangle, Incircle, Inradius, Congruent circles, tangent, Measurement. 

Proposed
Problem 433.
Quadrilateral, Triangle, Area, Proportion, Measurement, Similarity. 

Proposed
Problem 427.
Triangle, Two Altitudes, Square of a Side. 

Proposed
Problem 426.
Triangle, Circumradius, Circumcenter, concurrent Cevians. 

Proposed
Problem 425.
Quadrilateral, Triangle, Angles, 10, 20, 50 degrees, Congruence. 

Proposed
Problem 424.
Triangle, Cevian, Angle, 90 degree, Congruence. 

Proposed
Problem 423.
Triangle, 30, 40 degree, Angle, Congruence. 

Proposed
Problem 422.
Triangle, 24, 30 degree, Angle, Congruence. 

Proposed
Problem 421.
Right Triangle, Cevian, Angles, Measurement. 

Proposed
Problem 420.
Triangle, Altitude, Angles, Sides, Measurement. 

Proposed
Problem 419.
Triangle, Cevian, Incircle, Excircle, Inradius, Exradius 

Proposed
Problem 418.
Triangle, Incircle, Inradius, Equal Tangent circles, Radius. 

Proposed
Problem 416.
Triangle, Cevians, Trisectors, Area. 
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