This topic focuses on determining unknown angles in various polygon configurations, specifically within triangles and isosceles triangles. It is a beginner level part of a larger unit on solving problems involving 2D polygons. The problems require students to identify specific angle values using provided geometric figures and a list of multiple-choice options. Each question presents an image of a geometric shape with an angle marked as "X," where students must calculate the value of angle X from the given options. This helps improve students' understanding of basic geometric principles and angle calculations.

Work on practice problems directly here, or download the printable pdf worksheet to practice offline.