1. HONORS GEOMETRY 6.6: Trapezoids

2. Do Now: Complete the do now given to you when you entered class.

3. Homework Questions Comments? Confusions? Concerns? ASK ASK ASK!

4. Trapezoid A trapezoid is a quadrilateral with exactly one pair of parallel sides.

5. Parts of Trapezoids Bases: Parallel Sides Legs: Non-Parallel Sides Base Angles: formed by one base and one leg

6. Isosceles Trapezoid: When the legs of a trapezoid are congruent, it’s an isosceles trapezoid.

7. Properties of Isosceles Trapezoids If a trapezoid is isosceles, then each pair of base angles is congruent.

8. Properties of Isosceles Trapezoids If a trapezoid has one pair of congruent base angles, then it is an isosceles trapezoid.

9. Properties of Isosceles Trapezoids A trapezoid is isosceles if and only if the diagonals are congruent.

10. Example One: Which of these trapezoids is isosceles? Find the measure of each angle of the trapezoid

11. Example Two:

12. You Try! Assume ABCD is a isosceles trapezoid

13. Example Three:

14. You Try!

15. Midsegment of a Trapezoid Is the segment that connects the midpoints of the legs of a trapezoid.

16. Trapezoid Midsegment Theorem: The midsegment of a trapezoid is parallel to each base and its measure is one half the sum of the lengths of the bases.

17. Example Four: Find EF in each trapezoid:

18. You Try!

19. Example Five:

20. Example Six:

21. Practice Problems Try some on your own/in small groups As always don’t hesitate to ask me questions if you are confused!

22. Exit Ticket: