Gallery
Discover apps people built on Collabby by chatting. Run them, then remix to make them yours.
Shape Moves and Congruence
Slide, flip, and turn shapes to match the target, and discover that two reflections make a rotation.
by Anonymous
Triangle Congruence Conditions
Pick SSS, SAS, ASA, AAA or SSA and drag the sliders to see whether the triangle is uniquely determined or several different ones appear.
by Anonymous