Points, Lines, and Planes and the Segment Addition Postulate

Fill in the reason for 5. 

• Addition Postulate

• Substitution property

• Definition of midpoint

• Segment Addition Postulate

2 lines intersect at a point

• always

• sometimes

• never

• Only when I wear a striped sweater

For any two points, there is a unique line through them

• always

• sometimes

• never

A line must have at least 2 points.

• Always

• Sometimes

• Never

Fill in the reason for number 3. 

• Reflexive property

• Symmetric Property

• Transitive property

• Substitution property

Fill in the statement for number 3. 

• HA = AY

• HA = AP

• A is the midpoint of HP

Fill in the statement for number 4. 

• RA=RE +AE

• EL = EA + AL

• RE +EA= EA +AL

• RA = EL

This rule shows me tells me that if you have a segment AC with another point B somewhere between A and C, then AB+BC=AC.

• ABC Segment Theorem

• Equal Parts Rule

• Segment Addition Postulate

• Congruency Corollary

When using the Segment Addition Postulate, if point B is the MIDPOINT of segment AC, then...

• AB = BC

• A+B=C

• AB+BC=AC

• AB-BC=AC

_____ are lines that lie in the same plane.

• Collinear Points

• Coplanar Lines

• Line Segment

• Intersection