Use Congruent Triangles
4.6
Example: What triangles can you show are congruent in order to prove the statement.
What postulate or theorem would you use?
A
B
C
D
T
S
Q
R
V
U
W
Example: Proof
GIVEN:
see
2.3 ~ Deductive Reasoning
mm; uses facts, denitions, accepted properties and the laws of
logic to form a logical argument. Q
Wism If theSe Pe 0D
If hypothesis p, then conclusion q. Stateme
Identify Pairs of Lines and Angles 3.1
Two lines that dont intersect are either parallel
lines or skew lines.
- Parallel lines coplanar and do not intersect
I Skew lines not coplanar and do not i
Prove Triangles Congruent by ASA & AAS
Postulate 21: Angle-Side-Angle (ASA)
Congruence Postulate
If two angles and the included side of one
triangle are congruent to two angles and the
included side o
Prove Triangles Congruent by 555 4.3
Postulate 19:
If three sides of one triangle are congment to three sides of a second triangle, then
the two triangles are congruent. L.
Example: Prove the trian