Instructional Video
Sophia Learning

Sophia: Interior Angles

6th - 8th
Explore the interior angles of polygons and the degree of each angle as well as the total degree of the entire polygon. Assess learning with a quiz.
Instructional Video
Sophia Learning

Sophia: Intersecting Planes and the Coordinate Plane

9th - 10th
In this video lesson, students use a coordinate plane to determine what happens when two more planes intersect. [2:26]
Instructional Video
Sophia Learning

Sophia: Perpendicular Lines

6th - 8th Standards
This lesson defines perpendicular lines and gives an assessment to check understanding.
Instructional Video
Sophia Learning

Sophia: Perpendicular Lines

6th - 8th Standards
Discover the difference between perpendicular lines and intersecting lines. Assess understanding with a quiz.
Instructional Video
Sophia Learning

Sophia: Triangle Exterior Angles Theorem

9th - 10th
Explore how to find the exterior angle of a triangle using information about adjacent angles and opposite angles. Assess learning with a quiz.
Instructional Video
Sophia Learning

Sophia: Using Triangles to Find the Sum of Interior Angles

9th - 10th Standards
This lesson demonstrates how to use triangles to determine the sum of the interior angles of a polygon.
Instructional Video
Sophia Learning

Sophia: Using Triangles to Find the Sum of Interior Angles

9th - 10th Standards
This lesson demonstrates how to use triangles to determine the sum of the interior angles of a polygon.
Instructional Video
Sophia Learning

Sophia: Vertical Angles

9th - 10th Standards
This lesson introduces and defines vertical angles.
Instructional Video
Sophia Learning

Sophia: Vertical Angles

9th - 10th Standards
This lesson introduces and defines vertical angles.