© Submit 5 v
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Slope Criteria for Parallel and Perpendicular Lines: Mastery Test
1. ACICD
AABC is similar to ACED
Given
2.
Property of similar triangles
AB
BC
3. slope of AĆ
slope of
CD
Definition of slope
4. slope of AĆ x slope of CD =
5. slope of AC x slope of CD =
AB x D Multiplying the slopes
- Ee Substitution property of equality
X
>
6. slope of AĆ x slope of CD = -1
Simplifying the right side
The table shows the proof of the relationship between the slopes of two perpendicular lines. What is the missing statement in step 2?
OA AB = BE
OB. ABEBE
OC ABBE
4B =
OD