Curated OER
Pythagorean Theorem: Triangles and Their Sides
Students investigate triangles and their relationship to each other. In this geometry lesson, students solve right triangles using the properties of the Pythagorean Theorem. They differentiate between right, acute, straight and oblique...
Curated OER
Identify Triangles: Acute, Right, Obtuse, Straight
In this triangles instructional activity, students draw angles with given measurements and identify each as either acute, right, obtuse or straight. A reference web site is given for additional activities.