Blue – 3/2/2015 Gold – 3/3/2015

Bell Ringer: Finish the two-column proof. Prove:ΔLMN  ΔPON 2.  LNM   PNO 2. _________________ StatementsReasons 3.  M   O 3. _________________ 4.ΔLMN  ΔPON 4. ___________ 1. _________________ 1.

Two geometric figures with exactly the same size and shape. A C B DE F

How much do you need to know... need to know about two triangles to prove that they are congruent?

 ABC   DEF B A C E D F 1.AB  DE 2.BC  EF 3.AC  DF 4.  A   D 5.  B   E 6.  C   F  In the last lesson, you learned that if all six pairs of corresponding parts (sides and angles) are congruent, then the triangles are congruent

NO ! SSS SAS ASA AAS

1. AB  DE 2. BC  EF 3. AC  DF  ABC   DEF B A C E D F

1. AB  DE 2.  A   D 3. AC  DF  ABC   DEF B A C E D F included angle

The angle between two sides Included Angle is  G G  I I  H H

Name the included angle: YE and ES ES and YS YS and YE Included Angle SY E  E E  S S  Y Y

SAS SSS SAS SAS