Triangle Trials

Triangle Trials is a multiplayer math review game for grade 7. A geometry game show: the triangle inequality, angle sums, one-many-or-none triangle conditions, classifying triangles and drawn triangles.

Skills: Triangle inequality (can these sides make a triangle?), greatest and least possible third side, triangle angle sum of 180°, missing angles in isosceles and right triangles, whether conditions (SSS, SAS, ASA, three angles) give exactly one, more than one or no triangle, classifying triangles by sides and angles, recognizing drawn triangles, steps for drawing a triangle with a protractor and ruler.

New problems every game, with Easy, Medium and Hard levels. Every miss shows a short explanation.

Standards (Oklahoma OAS first, then national):

OAS 6.GM.3.2

Common Core: 7.G.A.2

What you get: one HTML game file that runs in any browser (Chromebooks, laptops, iPads, smartboards) plus a one-page Quick Start PDF. 1–6 players or teams, no logins, no installs.

Single-teacher license. Included in the Fletcher Math All-Access bundle.