Geometry Problem 1489. Post your solution in the comment box below.

Level: Mathematics Education, K-12 School, Honors Geometry, College.

Details: Click on the figure below.

## Thursday, December 3, 2020

### Geometry Problem 1489: Right Triangle, Angle Bisectors, Perpendicular, Measurement

## Wednesday, December 2, 2020

### Geometry Problem 1488: Right Triangle, Altitude, Angle Bisectors, Measurement

Geometry Problem 1488. Post your solution in the comment box below.

Level: Mathematics Education, K-12 School, Honors Geometry, College.

Details: Click on the figure below.

## Saturday, November 28, 2020

### Geometry Problem 1487: Right Triangle, Altitude, Angle Bisectors, Measurement

Geometry Problem 1487. Post your solution in the comment box below.

Level: Mathematics Education, K-12 School, Honors Geometry, College.

Details: Click on the figure below.

## Friday, November 27, 2020

### Geometry Problem 1486: Right Triangle, Altitude, Incircle, Tangent, Measurement

Geometry Problem 1486. Post your solution in the comment box below.

Level: Mathematics Education, K-12 School, Honors Geometry, College.

Details: Click on the figure below.

## Wednesday, November 25, 2020

### Geometry Problem 1485: Triangle, Orthocenter, Altitude, Circle, Diameter, Tangent, Measurement

Geometry Problem 1485. Post your solution in the comment box below.

Level: Mathematics Education, K-12 School, Honors Geometry, College.

Details: Click on the figure below.

## Saturday, November 14, 2020

### Geometry Problem 1484: Right Triangle, Altitude, Incircles, Inradius, Measurement

Geometry Problem 1484. Post your solution in the comment box below.

Level: Mathematics Education, K-12 School, Honors Geometry, College.

Details: Click on the figure below.

## Wednesday, November 11, 2020

### Geometry Problem 1483: Isosceles Right Triangle, Excenter, Perpendicular, Measurement

Geometry Problem 1483. Post your solution in the comment box below.

Level: Mathematics Education, K-12 School, Honors Geometry, College.

Details: Click on the figure below.

## Sunday, November 8, 2020

### Geometry Problem 1482: Right Triangle, Perpendicular, Double Angle, Measurement

Geometry Problem 1482. Post your solution in the comment box below.

Level: Mathematics Education, K-12 School, Honors Geometry, College.

Details: Click on the figure below.

## Sunday, May 24, 2020

### Dynamic Geometry 1481: Five Tangential or Circumscribed Quadrilaterals, Pitot Theorem, Congruence, 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.

Details: Click on the figure below.

## Friday, May 15, 2020

### Dynamic Geometry 1480: Japanese Theorem for Cyclic Polygon, Triangulation, Non-intersecting Diagonals, Sum of Inradii, Invariant, 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.

Details: Click on the figure below.