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

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

Click the figure below to view more details of problem 1277.

## Monday, October 24, 2016

### Geometry Problem 1277 Equilateral Triangle, Circumcircle, Externally Tangent Circles, Tangent Line, Measurement

## Sunday, October 23, 2016

### Geometry Problem 1276 Equilateral Triangle, Circumcircle, Internally Tangent Circles, Tangent Line, Measurement

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

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

Click the figure below to view more details of problem 1276.

## Thursday, October 20, 2016

### Geometry Problem 1275 Equilateral Triangle, Perpendicular, Projection, Metric Relations, Measurement

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

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

Click the figure below to view more details of problem 1275.

### Geometry Problem 1268 in motion: Triangle, Circles, Mobile Apps

### Geometry Problem 1274 Isosceles Triangle, 80-20-80 Degrees, Metric Relations, Measurement

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

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

This entry contributed by Sumith Peiris, Moratuwa, Sri Lanka.

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## Thursday, October 6, 2016

### Geometry Problem 1273 Circle, Tangent, Secant, Midpoint, Isogonal Lines, Congruent Angles

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

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

Click the figure below to view more details of problem 1273.

## Wednesday, October 5, 2016

### Geometry Problem 1272 Isosceles Triangle, Median, Midpoint, Perpendicular, 90 Degrees, Angles, Congruence

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

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

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## Sunday, October 2, 2016

### Geometry Problem 1271 Triangle, Incircle, Incenter, Excircle, Excenter, Escribed Circle, Tangency Points, Six Concyclic Points

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

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

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## Saturday, October 1, 2016

### Geometry Problem 1270 Triangle, Excircle, Excenter, Escribed Circle, Tangency Points, Perpendicular, 90 Degrees, Angle Bisector

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

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

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### Geometry Problem 1269 Triangle, Incircle, Incenter, Inscribed Circle, Tangency Points, Perpendicular, 90 Degrees, Angle Bisector

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

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

Click the figure below to view more details of problem 1269.