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GeoGebraGeoGebra Classroom

angles in a triangle (matching 2)

Author:
Arthur Lee
Topic:
Angles
Hide the angles and drag the vertices. You may change the relative position of these angles inside the triangle in this process. Can you match the angles in the triangle with the three angles on a straight line? Use the checkboxes to show or hide individual angles during this exploration and estimation.

Here is a quick demo.