This warm up is designed for geometry students learning about angle bisectors. A picture of a segment bisecting an angle is given, along with five choices for setting up the equation to solve for the measure of each angle. A word bank and a sentence starter are provided to aid in the construction of an argument determining how to solve for the variable. Students are asked to create a claim and use prior knowledge as evidence to support the argument.

Microsoft Word version: 912Geometry_AngleBisector_Warmup_Construct_AngleBisectorWarmup

PDF version: 912Geometry_AngleBisector_Warmup_Construct_AngleBisectorWarmup