SL AA – Right Angled Triangles

Missing angles in right-angled triangles
Missing sides in right-angled triangles
Elevation and depression

Teacher Resources

Desmos Distance in the Coordinate Plane

Students consider distances in the coordinate plane. They use right triangles and write about their process of finding the distance between two points. By Paul Jorgens.

Desmos Seeking Right Triangles

Students build right triangles and gather data about the squares on their sides. Prior to this lesson students will have found areas of squares on a geoboard and considered their side lengths. Students will have some familiarity with the vocabulary acute, obtuse, right, leg and hypotenuse. By Paul Jorgens.