## Friday, June 28, 2013

### Problem 894: Triangle, Angle, 60 degrees, Incenter, Midpoint, Parallel Lines

Geometry Problem. GeoGebra, HTML5 Animation for iPad and Nexus.
Post your solution in the comments box below.

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

Click the figure below to see the dynamic geometry demonstration of problem 894.

## Wednesday, June 26, 2013

### Problem 893: Triangle, Circumcircle, Incenter, Circle, Tangent, Collinear Points

Geometry Problem. GeoGebra, HTML5 Animation for iPad and Nexus.
Post your solution in the comments box below.

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

Click the figure below to see the dynamic geometry demonstration of problem 892.

### Problem 892: Triangle, 60 degrees, Orthocenter, Circumcenter

Geometry Problem. GeoGebra, HTML5 Animation for iPad and Nexus.
Post your solution in the comments box below.

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

Click the figure below to see the dynamic geometry demonstration of problem 892.

## Sunday, June 23, 2013

### Problem 891: Equiangular Octagon, Metric Relations, Sides, Auxiliary Lines

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

Click the figure below to see the complete problem 891.

## Tuesday, June 18, 2013

### Problem 890: Two Squares inscribed in Circles, Concurrent Lines

Geometry Problem. GeoGebra, HTML5 Animation for iPad and Nexus.
Post your solution in the comments box below.

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

Click the figure below to see the dynamic geometry demostration of problem 890.

## Saturday, June 15, 2013

### Problem 889: Carnot's Theorem in an acute triangle, Circumcenter, Circumradius, Inradius

Geometry Problem. GeoGebra, HTML5 Animation for iPad and Nexus.
Post your solution in the comments box below.

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

Click the figure below to see the dynamic geometry demostration of problem 889.

## Friday, June 14, 2013

### Problem 888: Butterfly Theorem, Circle, Chord, Midpoint

Geometry Problem. GeoGebra, HTML5 Animation for iPad and Nexus.
Post your solution in the comments box below.

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

Click the figure below to see the dynamic geometry demostration of problem 888.

## Wednesday, June 12, 2013

### Titian or Tiziano: Bacchus and Ariadne and Golden Rectangle

HTML5 Animation for iPad and Nexus
Click the figure to open the interactive illustration.

### Titian or Tiziano: Assumption of the Virgin and Golden Rectangle

HTML5 Animation for iPad and Nexus
Click the figure to open the interactive illustration.

### Titian or Tiziano: Sacred and Profane Love and Golden Rectangle

HTML5 Animation for iPad and Nexus
Click the figure to open the interactive illustration.

### Titian or Tiziano and Geometry

Index
Click the figure below to see the index.

## Monday, June 10, 2013

### Problem 887: Triangle, Altitude, Angle Bisector, Perpendicular, Midpoint, Concyclic Points. GeoGebra

Geometry Problem. GeoGebra, HTML5 Animation for iPad and Nexus.
Post your solution in the comments box below.

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

Click the figure below to see the dynamic geometry demostration of problem 887.

## Saturday, June 8, 2013

### Problem 886: Right Triangle, Incenter, Angle Bisector, Perpendicular, 45 Degrees, Concyclic Points, Isosceles Right Triangle

Geometry Problem. GeoGebra, HTML5 Animation for iPad and Nexus.
Post your solution in the comments box below.

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

Click the figure below to see the complete problem 886.

### Problem 885: Intersecting Circles, Three Tangent Lines, Midpoint

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

Click the figure below to see the complete problem 885.

## Friday, June 7, 2013

### Problem 884: The Pythagorean Curiosity, Fifteen Conclusions

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

Click the figure below to see the complete problem 884.

## Thursday, June 6, 2013

### Plane Geometry Game: Cloudy

Game
Drag green dots to determine path of flight.

Click the figure below to play the game.

## Wednesday, June 5, 2013

### Problem 883: Five Tangential or Circumscribed Quadrilaterals, Circle, Tangent, Common Tangent

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

Click the figure below to see the complete problem 883.

## Saturday, June 1, 2013

### Problem 882: Triangle, Angle, x, 2x, 7x, Cevian, Congruence, Auxiliary Lines

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

Click the figure below to see the complete problem 882.