The document is a geometry homework assignment that provides examples to illustrate different postulates including: 1) The reflexive property which states two segments are congruent if they overlap. 2) The segment addition postulate which allows calculating the length of a third segment if two segments share an endpoint. 3) The angle addition postulate which allows calculating the measure of an exterior angle if the measures of two interior angles are known. Students are instructed to identify which postulate applies in each example and solve problems using the postulates.

1. 2.4 Postulates September 08, 2011
State which postulate justifies each statement.
B
E
L
L
W
O
R
K
HW pg. 99 #4­24 evens 1

2. 2.4 Postulates September 08, 2011
Do worksheet from table.
HW pg. 99 #4­24 evens 2

3. 2.4 Postulates September 08, 2011
2.4 Postulates and Diagrams
A B C D
Given: AB ≅ CD
What conclusion can you make about AC and BD?
Reflexive Property
BC ≅ BC
Segment Addition Postulate
A B C
If B is between A & C, then AB + BC = AC
If AB = 23 & BC = 11, then AC = ?
Angle Addition Postulate
If R is in the interior of ∠ PQS, the m∠PQR + m∠RQS = m∠PQS.
If PQR = 33 & RQS = 44, then PQS = ? P
R
Q
S
HW pg. 99 #4­24 evens 3

4. 2.4 Postulates September 08, 2011
HW pg. 99 #4­24 evens 4

5. 2.4 Postulates September 08, 2011
HW pg. 99 #4­24 evens 5

6. 2.4 Postulates September 08, 2011
Pg 99
#4-24
evens
HW pg. 99 #4­24 evens 6