Geometry Regents Review: Triangles (Midsegments, Special Rights, & Theorems)

Triangles are the foundation of the entire Geometry Regents exam. If you don't know your theorems, you are leaving easy points on the table. In this video, we are breaking down the four essential triangle concepts you must master before exam day: Special Right Triangles, Midsegments, the Side Splitter Theorem, and the Exterior Angle Theorem. We solve real exam-style problems step-by-step under the camera so you can spot these properties instantly on the test. What We Master in This Video: 1. Special Right Triangles (45-45-90 and 30-60-90): How to use the ratio shortcuts to find missing sides without wasting time on the Pythagorean Theorem. 2. The Midsegment Theorem: Understanding the 1:2 ratio and parallel line properties created by connecting the midpoints of a triangle. 3. The Side Splitter Theorem: Setting up geometric proportions correctly when a line is drawn parallel to one side of a triangle. 4. The Exterior Angle Theorem: The ultimate shortcut—proving why the exterior angle is always equal to the sum of the two remote interior angles. I’ll show you how to set up algebraic equations when these geometric concepts are hidden behind variable expressions (like solving for x), which is exactly how the Regents likes to format their written response questions. #geometryregents #geometry #triangles #SpecialRightTriangles #MidsegmentTheorem #SideSplitterTheorem #ExteriorAngleTheorem #nysregents #absolutevaluemath #highschoolmath