Proof Without Words
Pythagoras or Pythagorean Theorem
Drag the points. Drag the slider. What do you notice? What does this prove? How does this prove?
Open Middle Inscribed Angle Exercise (1)
Open Middle: Graphing Linear Inequalities (4)
Which Area is Larger?
Open Middle: Graphing Linear Inequalities (2)
Simple Bridge (GeoGebra 3D Workshop)
quadratic - part 1
Area of a Triangle
square cross section
Sum of Interior Angles of a Polygon
Tangent Line or Tangent