Two parallel lines cut by a transversal-Angle relationships

Author:Ben Huhner

What do you notice about the angles in the figure below? Click and drag points A and D to move parts of the picture around. What changes? What stays the same?

New Resources

Segment Addition Postulate (Mild Questions)
Parabolas, Lines and Nomograms
Right Triangle Inscribed in a Semicircle
Squares Question
Angle Addition Postulate (V2) - Integer Solutions

Discover Resources

Cône opaque.
Decimal Spider
Standard Deviation Graphs
Figure 2
Cyclic Quadrilaterals (IAT: Corollary 3)

Discover Topics

Centroid or Barycenter
Diagrams
Geometry
Rational Numbers
Pythagoras or Pythagorean Theorem