PS/IS 686 | Brooklyn, NY

Grade 8 Math: Congruent Triangles

Here is a picture that captures a great moment from one of our 8th grade classes!
Students are investigating what information is needed in order to determine that 2 triangles are congruent. In this moment students are looking for a counterexample to disprove the conjecture that in an obtuse angle, you only need to know the measurement of the largest angle and the largest side.