This 8th grade math triangle theorems lesson plan aligns with the Common Core State Standards for Mathematics. Students will learn about the properties of triangles and the relationships between their sides and angles. The lesson begins with an introduction to basic geometric vocabularies, such as congruence, similarity, and the Pythagorean Theorem. Students will then explore the different types of triangles, including equilateral, isosceles, and scalene triangles, and the theorems that govern their properties.