## Friday, June 28, 2013

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

Geometry Problem. GeoGebra, HTML5 Animation for iPad and Nexus.

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.

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.

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

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.

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.

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.

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.

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.

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

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

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

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

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

Click the figure below to see the complete problem 882.