1. Lesson 10-4 Pages 513-517 Quadrilaterals Lesson Check 10-3

2. What you will learn! How to find missing angle measures of quadrilaterals and classify quadrilaterals.

3. Quadrilateral

4. What you really need to know! A quadrilateral is a closed figure with four sides and four vertices. Squares, rectangles, and trapezoids are examples of quadrilaterals.

5. What you really need to know! The sum of the angles of a quadrilateral is 360°.

9. Example 1: Find the value of x. Then find each missing angel measure.

10. Example 1: 4x + 110 + x + 75 = 3605x + 185 = 3605x = 175 x = 35 140° 35°

11. Example 2: Classify each quadrilateral using the name that best describes it. Trapezoid Parallelogram Square

12. Page 515 Guided Practice #’s 3-7

14. Pages 513-515 with someone at home and study examples! Read:

15. Homework: Pages 516-517 #’s 8-13, 16-21, 23-26, 31, 32, 34-40 Practice Quiz 1 #’s 1-5 Lesson Check 10-4

19. Page 748 Lesson 10-4

20. Lesson Check 10-4

21. Prepare for Mid-Test! Pages 544-546 #’s 1-21 Odd Answers in Back of Book!