Side-Side-Angle - The Ambiguous Case

This application allows you to view the ambiguous case of Side-Side-Angle and illistrate why two triangles with Side-Side-Angle cannot prove triangle congruency.

Move the slide to determine how many triangles you want to be shown. Adjust the angle slider to try and make a triangle with the side lengths.

Remember for Side-Side-Angle, two sides and an angle are fixed, where two angles and a side (the dotted line) can have any measure.

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David Travis
Lincoln North Star Math Department
Lincoln, NE
dtravis2@lps.og

David Travis, Created with GeoGebra