# Trapezoids

- In particular, look at the various angle measures, note all observations: base angles on the same base, consecutive angles on different bases - what do you notice?
*Keep in mind, when two parallel lines are cut by a transversal, same-side interior angles are supplementary.*- How does this theorem apply to the trapezoid.
**After completing your observations for the standard trapezoid,**click the box next to Trapezoid and the box next to Isosceles Trapezoid to reveal the isosceles trapezoid. - Observe all parts of the isosceles trapezoid. Compare them to the properties in your notes.
- In particular, look at the various angle measures, note all observations: base angles on the same base, consecutive angles on different bases - what do you notice, and how is this different from the standard trapezoid?

**Observe all parts of the trapezoid.**Compare them to the properties in your notes.

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