http://www.regentsprep.org/regents/math/geometry/GP4/preprooftriangles.htm
http://mathbitsnotebook.com/Geometry/CongruentTriangles/CTbeginning.html
Level 1
http://feromax.com/cgi-bin/ProveIt.pl?task=presentproof&proofid=001220
Level 2
http://feromax.com/cgi-bin/ProveIt.pl?task=presentproof&proofid=001240
Level 3
http://feromax.com/cgi-bin/ProveIt.pl?task=presentproof&proofid=001260
Level 4
http://feromax.com/cgi-bin/ProveIt.pl?task=presentproof&proofid=001280
Translations
https://za.ixl.com/math/grade-8/translations-find-the-coordinates
https://za.ixl.com/math/grade-8/translations-graph-the-image
Reflection
https://za.ixl.com/math/grade-8/reflections-graph-the-image
https://za.ixl.com/math/grade-8/reflections-find-the-coordinates
Rotation:
https://za.ixl.com/math/grade-8/rotations-graph-the-image
https://za.ixl.com/math/grade-8/rotations-find-the-coordinates
identifying
https://za.ixl.com/math/grade-8/identify-reflections-rotations-and-translations
Mix
https://za.ixl.com/math/grade-9/reflections-rotations-and-translations-find-the-coordinates
https://za.ixl.com/math/grade-9/reflections-rotations-and-translations-graph-the-image
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