Dynamic Geometry 1468: Steiner's Theorem, Triangle, Circumradius, Inradius, Sum of Exradii

Interactive step-by-step animation using GeoGebra. Post your solution in the comment box below.
Level: Mathematics Education, High School, Honors Geometry, College.

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Sacred Geometry Art of Problem 1377: Isosceles Triangle, Interior Cevian, Equal Sum of Exradii, Excircle, iPad Apps

Geometric Art: Typography, iPad

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Geometry Problem 1377: Isosceles Triangle, Interior Cevian, Equal Sum of Exradii, Excircles

Geometry Problem. Post your solution in the comment box below.
Level: Mathematics Education, High School, Honors Geometry, College.

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Geometry Problem 1375: Isosceles Triangle, Interior Cevian, Exradius, Excircle, Altitude to the Base

Geometry Problem. Post your solution in the comment box below.
Level: Mathematics Education, High School, Honors Geometry, College.

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Geometry Problem 1373: Isosceles Triangle, Exterior Cevian, Inradius, Exradius, Altitude to the Base

Geometry Problem. Post your solution in the comment box below.
Level: Mathematics Education, High School, Honors Geometry, College.

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Geometry Problem 1372: Equilateral Triangle, Exterior Cevian, Inradius, Exradius, Altitude, Sketch, iPad Apps

Geometry Problem. Post your solution in the comment box below.
Level: Mathematics Education, High School, Honors Geometry, College.

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Geometry Problem 1309 Triangle, Circle, Inradius, Excircle, Tangent, Exradius, Measurement

Geometry Problem. Post your solution in the comment box below.
Level: Mathematics Education, High School, Honors Geometry, College.

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Geometry Problem 1068: Obtuse Triangle, Orthocenter, Circumradius, Inradius, Exradii, Distance, Diameter

Geometry Problem. Post your solution in the comments box below.
Level: Mathematics Education, High School, Honors Geometry, College.

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Geometry Problem 1067: Acute Triangle, Orthocenter, Circumradius, Inradius, Exradii, Distance, Diameter

Geometry Problem. Post your solution in the comments box below.
Level: Mathematics Education, High School, Honors Geometry, College.

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Geometry Problem 1066: Triangle, Obtuse Angle, Orthocenter, Circumradius, Inradius, Exradius, Distance, Diameter

Geometry Problem. Post your solution in the comments box below.
Level: Mathematics Education, High School, Honors Geometry, College.

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Geometry Problem 1065: Triangle, Acute Angle, Orthocenter, Circumradius, Inradius, Exradius, Distance, Diameter

Geometry Problem. Post your solution in the comments box below.
Level: Mathematics Education, High School, Honors Geometry, College.

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Geometry Problem 1056: Triangle, Exradius, Reciprocals of the Altitudes, Multiplicative Inverse, Perpendicular, Excircle, Circle

Geometry Problem. Post your solution in the comments box below.
Level: Mathematics Education, High School, Honors Geometry, College.

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Geometry Problem 959. Triangle, Sides Ratio 4:1, Inradius, Exradius, Cevian, Mean Proportional, Geometric Mean

Geometry Problem
Level: Mathematics Education, High School, Honors Geometry, College.

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Geometry Problem 942: Triangle, Circles, Circumcircle, Sagitta, Incircle, Excircle, Inradius, Exradius, Metric Relations

Geometry Problem. Post your solution in the comments box below.
Level: Mathematics Education, High School, Honors Geometry, College.
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Problem 766: Triangle, Altitudes, Exradii, Three Exradius, Equal Harmonic Mean

Geometry Problem
Level: Mathematics Education, High School, Honors Geometry, College.

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Problem 765: Triangle, Exradii, Inradius, Three Exradius, Harmonic Mean

Geometry Problem
Level: Mathematics Education, High School, Honors Geometry, College.

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Geometry Problems 201-210: Right Triangle, Incircle, Excircle, Area, Radius

Ten Geometry Problems
Click the figure below to see problems 201-210 about Right Triangle, Incircle, Excircle, Area, Points of Tangency, Inradius, Exradius, Semiperimeter, Hypotenuse, 360 Degrees, Angle.

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See also:
Problems 201-210

Level: High School, SAT Prep, College geometry

Geometry Problems 191-200: Triangle, Quadrilateral, Circle, Area, Perimeter

Ten Geometry Problems
Click the figure below to see problems 191-200 about Triangle, Circle, Square, Area, Diameter, Altitude, Orthocenter, Semiperimeter, Inradius, Exradius, Quadrilateral, Angle, Tangent, Right triangle.

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See also:
Problems 191-200

Level: High School, SAT Prep, College geometry

Geometry Problems 151-160: Triangle, Quadrilateral, Area, Circle, Similarity, Center

Geometry Problem
Click the figure below to see problems 151-160 about Triangle, Quadrilateral, Area, Trisection, Circle, Proportion, Diagonal, Chord,Inradius, Circumradius, Exradius, Euler, distance, Incenter, Circumcenter, Excenter, Incircle, Circumcircle.

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See also:
Problems 151-160

Level: High School, SAT Prep, College geometry

Geometry Problems 81 - 90

Geometry Problem
Click the figure below to see problems 81-90 about Triangle, Quadrilateral, Circle, Incircle, Circumcircle, Excircle, Inradius, Circumradius, Exradius, Contact Triangle, Area, Midpoint.


See also:
Problems 81-90

Level: High School, SAT Prep, College geometry