2. Bellwork!! Aaron mixes 2 ounces of oil to each gallon of gas. Which proportion could be used to determine the amount of oil “a” needed for 2.5 gallons of gas? (DOK 3) I. II. III. a)I and II b)II and III c)I and III d)I, II, and III

3. And now it’s time for……. Timed Skill Drill…..Homework Review… TSD H.R.

4. Congruent Figures By: Mrs. Yow Pre-Algebra obj. 3c

5. What are Congruent Figures? Congruent figures.... Are figures that have the exact same shape AND size! Why learn about Congruent Figures? Let’s see…

6. You see congruency in Architecture! World Trade Center

7. Congruency in Architecture! Petronas Twin Towers (Malaysia’s version)

8. Congruency in Architecture! Portland, Maine Convention Center and Hotel

9. The US Department of Treasury must use congruency when it makes money!

10. Manufacturers use congruency when making their products! MOTORAZR V3 Assembly Line Packaging Toy Makers

11. Symbol for Congruence If two polygons are congruent, then their corresponding or matching sides and angles are also congruent.

12. These triangles are congruent Name the corresponding parts

13. Make 6 more congruence statements Given :

14. Answer the following for PRI  BJH. Sketch a figure if needed. IPR  ______ R  _____  _____ H  _____ If I = 70 and B = 50, then J = _____ If RI = 8 cm, BJ = 6 cm, BH = 7 cm, then PR = _____

15. The sum of the angles of a quadrilateral is 360. quadrilateral BRAV  quadrilateral METS quadrilateral AVBR  quadrilateral _______ If V = 62, then ___ = 62. If RA = 7 cm, then ____ = 7 cm. If E = 100, then  ___ = 100. If MS = 11 cm, then ____ = 11 cm. Using the measures of V and E given above, if T = 110 then B = ____.

16. In closing….. Make a congruence statement and list all congruent parts.