1. Week 10 day 2 6 Terrence designed a patio based on the diagram. If AB║DC and the measure of / ADE = 108°, what is the measure of /BAD in degrees? AB CDE Get out your homework from last night!!!

2. 4.3 Triangle Congruence by ASA and AAS You will construct and justify statement about triangles using Angle Side Angle and Angle Angle Side Pardekooper

3. If three sides of a triangle are congruent to three sides of another triangle, then the triangles are congruent. Quick review of yesterday Side Side Side (SSS) Postulate A B C D E F ABCDEF

4. If two sides and the included angle of a triangle are congruent to two sides and the included angle of another triangle, then the triangles are congruent. Side Angle Side (SAS) Postulate A B C D E F ABCDEF

5. If two angles and the included side of a triangle are congruent to two angles and the included side of another triangle, then the two triangles are congruent. Lets look at some postulates Angle Side Angle (ASA) Postulate ABCDEF A B C D E F

6. If two angles and a nonincluded side of a triangle are congruent to two angles and a nonincluded side of another triangle, then the two triangles are congruent. Just one more postulate Angle Angle Side (AAS) Postulate ABCDEF D A B C E F

7. Are the following congruent ? Yes SAS No Yes AAS Yes ASA

8. 1. XQ  TR, XR bisects  QT Now, its time for a proof. Given: XQTR, XRbisects QT Prove: XMQRMT StatementReason 1. Given 2. Def. of bisects 2. TM  QM 3.  XMQ  RMT 3. Vertical  ’s are  M T X Q R 4. Alternate interior  ’s are  4.  XQM  RTM 5.  XMQ  RMT 5. ASA

9. Which two are congruent and why ? P QR S T U W X Y  RPQ  UTS ASA

10. Homework