2. Transparency 5 Click the mouse button or press the Space Bar to display the answers.

3. Splash Screen

4. Example 5-3b Objective Identify congruent polygons

5. Example 5-3b Vocabulary Congruent polygons Polygons that have the same size and shape

6. Lesson 5 Contents Example 1Identify Congruent Polygons Example 2Find Missing Measures Example 3Find Missing Measures

7. Example 5-1a Determine whether the trapezoids shown are congruent. If so, name the corresponding parts and write a congruence statement. 1/3 Turn one figure to match other figure m  E is congruent with m  Q

8. Example 5-1a Now can see which angle in QRST is congruent with EFGH 1/3 Name the corresponding parts m  Q  m  E,m  R  m  F,m  S  m  G,m  T  m  H,

9. Example 5-1a 1/3 Now can see which sides in QRST is congruent with EFGH Name the corresponding parts QR  EF,RS  FG,ST  GH,TQ  HE,

10. Example 5-1a 1/3 Write a congruence statement Since all angles are congruent and all sides are congruent, make the statement All sides and angles are congruent Answer:

11. Example 5-1b Determine whether the triangles shown are congruent. If so, name the corresponding parts and write a congruence statement. 1/3 Answer: Yes, triangles are congruent

12. Example 5-2a In the figure, Find 2/3 According to the congruence statement, m  H  m  S m  H  m  S m  H = 35 0 m  S = 35 0 Answer:

13. Example 5-2b In the figure, Find Answer: 2/3 m  N = 55 0

14. Example 5-3a In the figure, Find QR. 3/3 According to the congruence statement, FG  QR FG = 6 cm FG  QR QR = 6 cm Answer: QR = 6 cm

15. Example 5-3b Answer: LN = 5 inches In the figure, Find LN. * 3/3

16. End of Lesson 5 Assignment Lesson 6:5Congruent Polygons3 - 22 All