
Geometry · Definitions & triangle area
Define & Conquer
Claim squares by naming undefined terms, choosing precise definitions, fixing flawed definitions with counterexamples, and finding triangle areas with ½ab sin C. Get 4 in a row to win.
2 multiplayer classroom games aligned to Oklahoma (OAS) standard PC.T.2.3. Pick one to practice this standard with your whole class on a smartboard or Chromebooks, with no student logins. Every game has a free demo.

Claim squares by naming undefined terms, choosing precise definitions, fixing flawed definitions with counterexamples, and finding triangle areas with ½ab sin C. Get 4 in a row to win.

Exact trig values, inverse trig, identities, sum and double-angle formulas, trig equations and the Laws of Sines and Cosines.
The All-Access Teacher License includes every game, every grade and all future games.