4.4 Proving Congruence SSS, SAS 4 Ways to Prove s

1
4.4 Proving Congruence SSS, SAS
2
4 Ways to Prove ?s Congruent

• SSS (side-side-side) if sides of 1 ? are
  congruent to sides of another ? ?s
  congruent

D
A
B
C
F
E
3
Proof Example
B
C
Given AB AC BY CY Prove ?BYA ?CYA
Y
A
4

• 2. SAS (side-angle-side) if 2 sides included
  angle of 1 ? are congruent to 2 sides included
  angle of another ?, ? ?s are congruent

L
I
M
J
K
H
5
Proof Example
J
H
Given JL bis HC HC bis JL Prove ?JHB
?LCB
B
L
C
6

• 4.4 p. 204
• (10, 12, 16-24 even, 30-46 even)