Circle tag · Community Cases

Curated works from the GeoGebra community

Circles, with chords, arcs, tangents, sectors and inscribed angles, are foundational in both construction and coordinate geometry.

Sine and Cosine Scale Ruler: Visualizing Trigonometric Functions via the Unit Ci

@dingyinjie 2019-05-08 12:39

Pythagorean Theorem and Ptolemy's Theorem Geometric Construction

@pegasusroe 2015-09-28 20:24

Power Functions with Geometry Construction: Parametric Curves via Circumcircles

@1041018 2015-10-20 11:11

Concave Square Optical Illusion

@Cassiel_Tong 2020-02-03 14:17

Pythagorean Theorem: Geometric Proof and Construction

@hanwenpan 2018-10-26 09:10

Dynamic Verification of the Pythagorean Theorem with Semicircles and Reflection

@pegasusroe 2015-09-28 20:29

Redefining Trigonometric Functions via the Unit Circle

@lyclyc2002hk 2016-04-06 13:10

Wordless Proof of Pythagorean Theorem 7

@hanwenpan 2017-12-11 10:53

Proof of Pythagorean Theorem 18

@hanwenpan 2018-01-29 21:50

Linking SHM to Uniform Circular Motion via Oscillation Animation

@nmfdckk4 2020-12-05 22:39

Comprehensive Graphs of Trigonometric Functions

@pegasusroe 2013-10-06 20:30

Sine of an Angle in a Cyclic Quadrilateral with Given Area Ratio

@pegasusroe 2013-10-22 09:16

…