Section 
Page 
Segment
Measure and Coordinate Graphing

2.1 
50 
Real Numbers and Number Lines 




vocabulary 
whole numbers, natural (or counting) numbers,
integers, rational numbers, terminating decimals, nonterminating
decimals, irrational numbers, real numbers, coordinate,
origin, absolute value 
theorem/postulates 
Postulate 21, Postulate 22, Postulate
23 
2.2 
56 
Segments and Properties of Real
Numbers 
new 
per2 
per6 
honors
class  per 5 
vocabulary 
betweenness,
equation, measurement, unit of measure, precision, greatest
possible error, percent of error 
theorem/postulates 
reflexive property, symmetric property,
transitive property, addition and subtraction properties,
multiplication and division properties, substitution
property 
2.3 
62 
Congruent Segments 
new 
per2 
per6 
honors
class  per 5 
vocabulary 
congruent segments, theorem, midpoint,
bisect 
construction 
segment
bisector (a.k.a. perpendicular bisector) 
theorem/postulates 
Theorem 21, Theorem
22, Theorem 23 
2.4 
68 
The Coordinate Plane 
new 
per2 
per6 
honors
class  per 5 
vocabulary 
coordinate plane, xaxis, yaxis, quadrant,
origin, ordered pair, coordinates, graph,
xcoordinate, ycoordinate 
theorem/postulates 
Theorem 24 
2.5 
76 
Midpoints 
new 
per2 
per6 
honors
class  per 5 
vocabulary 
no new vocabulary 
theorem/postulates 
Theorem 25, Theorem 26 

