Instructional Video3:19
Curated Video

Constructing an Inscribed Circle on a Triangle Using Angle Bisectors

K - 5th
In this video, you will learn how to construct an inscribed circle on a triangle using the triangle's angle bisectors. The inscribed circle is the largest possible circle that fits inside the triangle, with the triangle's sides tangent...
Instructional Video
Sophia Learning

Sophia: Area of Regular Polygons

9th - 10th Standards
This video lesson demonstrates how to find the area of any regular polygon using the apothem. Students can check their understanding with an assessment.