Geometry Problem 1573: Find the Angle at K

Challenging Geometry Puzzle: Problem 1573. Share your solution by posting it in the comment box provided.
Audience: Mathematics Education - K-12 Schools, Honors Geometry, and College Level.

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Geometry Problem 1556: Right Triangle ABC and Inscribed Circle.

Challenging Geometry Puzzle: Problem 1556. Share your solution by posting it in the comment box provided.
Audience: Mathematics Education - K-12 Schools, Honors Geometry, and College Level.

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Geometry Problem 1555: Find Length of DE

Challenging Geometry Puzzle: Problem 1555. Share your solution by posting it in the comment box provided.
Audience: Mathematics Education - K-12 Schools, Honors Geometry, and College Level.

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Geometry Problem 1540: Solving for the Length of Chord in a Circle: Analyzing Intersections and Given Values

Geometry Problem 1540. Post your solution in the comment box below.
Level: Mathematics Education, K-12 School, Honors Geometry, College.

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Geometry Problem 1531: Discover How to Calculate the Length of a Chord in a Circle with Diameter Intersection and an Angle between the Diameter and Chord

Geometry Problem 1531. Post your solution in the comment box below.
Level: Mathematics Education, K-12 School, Honors Geometry, College.

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Geometry Problem 1527: Discovering the Hidden Angle: Solving the Puzzle of Two Intersecting Circles. Difficulty Level: High School.

Geometry Problem 1527. Post your solution in the comment box below.
Level: Mathematics Education, K-12 School, Honors Geometry, College.

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Geometry Problem 1498: Intersecting Circles, Diameter, Common Chord, Secant, Cyclic Quadrilateral, Concurrent Lines, Concyclic and Collinear Points

Geometry Problem 1498. Post your solution in the comment box below.
Level: Mathematics Education, K-12 School, Honors Geometry, College.

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Geometry Problem 1495: Circle, Parallel Chords, 30 Degree Angle, Radius Squared

Geometry Problem 1495. Post your solution in the comment box below.
Level: Mathematics Education, K-12 School, Honors Geometry, College.

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Dynamic Geometry 1479: Triangle, Circumcircle, Angle Bisector, Perpendicular Bisector, Chord, Concyclic Points, Parallel Lines, Step-by-step Illustration

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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Dynamic Geometry 1474: Butterfly Theorem, Circle, Chords, Midpoints, Step-by-step Illustration

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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Dynamic Geometry 1449: Salmon Line

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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Geometry Problem 1441 Intersecting Circles, Perpendicular Bisector, Parallel Lines

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

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Geometry Problem 1431: Triangle, Circumcircle, Parallel Chord, Apollonius, LLC, Congruent Angles

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

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Geometry Problem 1405: Four Congruent Circles, Congruent Chords

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

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Geometry Problem 1383: Triangle, Median, Circle, Chord, Secant, Sum, Product

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

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Geometry Problem 1380: Common Internal Tangents. Circles, Secant, Congruent Chords

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

This entry contributed by Markus Heisss, Wurzburg, Bavaria.

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Geometry Problem 1379: Common External Tangents. Circles, Secant, Congruent Chords

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

This entry contributed by Markus Heisss, Wurzburg, Bavaria.

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Geometry Problem 1365: Circle, Tangent, Secant, Chord, Parallel, Midpoint, 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 1364: Square, Inscribed Circle, Area, Angle Bisector, Perpendicular, 45 Degrees, Sketch, iPad Apps

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

This entry contributed by Peter Tran, California, U.S.A..

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Geometry Problem 527: Circle, Tangent, Secant, Chord, Midpoint, Measurement, Typography, iPad Apps

Geometric Art: Typography, iPad

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