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 1529: Unlock the Mystery of Triangles: Solving for the Missing Angle with 100-50-30 Degree Angles and Cevian Lengths

Geometry Problem 1529. 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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Geometry Problem 1461: Quadrilateral, Triangle, Angles, 30-60 Degree, Congruence, Auxiliary Lines

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

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Geometry Problem 1429: Triangle, Median, 15-30 degree, Angle, Congruence

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

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

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Geometry Problem 1356: Quadrilateral, Triangle, Angle, 30 Degrees, Congruence

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

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Geometry Problem 1353: Tangent Circles, Perpendicular Diameters, Congruence, 30 Degrees

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

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Geometry Problem 1323: Square, Angle Trisector, Diagonal, Regular Dodecagon, Area, 30-60 degrees

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

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Geometry Problem 964: Right Triangle, Cevians, Angles, 10, 20, 30 Degrees

Geometric Art: Typography, iPad

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Geometry Problem 1299 Triangles, Interior Point, Angles, 30 degrees

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

This entry contributed by Apostolis Manoloudis, Korydallos, Piraeus, Greece.

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Geometry Problem 1288 Triangle, 30-50-100 Degrees, Area, Inradius, 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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Geometry Problem 1152: Triangle, Quadrilateral, Angle, 10, 20, 30 Degrees

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

This entry contributed by Sumith Peiris, Moratuwa, Sri Lanka.
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Geometry Problem 992: Triangle, Interior Point, Angles, 20, 30 , 40, 50 Degree

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

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Geometry Problem 988: Right Triangle, Cevians, Angles, 30 Degrees, Triple Angle

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

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Geometry Problem 964: Right Triangle, Cevians, Angles, 10, 20, 30 Degrees

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

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Geometry Problem 956: Two Equilateral Triangles, Center, Collinear Points, Midpoint, Right Triangle, 30, 60, 90 Degrees

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

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Problem 872: Quadrilateral, Triangle, Angle, 30, 90 degrees

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

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Problem 857: Triangle, Median, Midpoint, Angles, 30, 45 Degrees, Congruence, Auxiliary Lines

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

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Problem 856: Quadrilateral, Diagonals, Triangle, Angles, 30 degrees, Congruence, Auxiliary lines

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

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Problem 855: Quadrilateral, Triangle, Angles, 30 degrees, Congruence, Auxiliary lines

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

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