Incenter of a Triangle
The incenter of a triangle is the point of concurrency of the angle bisectors. The inscribed circle is centered at the incenter and is tangent to each side of the triangle.
Dilations for 7th grade
Net of a polygon with adjustable height
Constructing the Centroid of a Triangle
Exploration 2 - Proportionallity with 3 Lines
Transformations of Parabolas
Coins in a row