1. Trapezoid Properties Objective: Discover properties of trapezoids

2. First of All: What is a trapezoid? a trapezoid is a quadrilateral with exactly one pair of parallel sides.

3. Angles/Sides in a Trapezoid

4. Consecutive Angles

5. Isosceles Trapezoid a trapezoid whose two nonparallel sides are the same length is called an isosceles trapezoid

6. Line of Symmetry There is one line of symmetry for all trapezoids What points do you think this line of symmetry crosses through? The line of symmetry splits the trapezoid in half. Therefore, the line goes through the midpoints of the bases

7. Base Angles of an Isosceles Trapezoid x b a y x=y a=b

8. Diagonals X BA Y

9. Let’s Practice!