Slope and Segment Addition
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Objective
I can calculate the slope of a line and apply the segment addition postulate to solve geometric problems.
Part 1 of 4
Warm-up video
MaeMap · 10:16
We don't generate video — this one is by MaeMap on YouTube. The practice questions and exit ticket below were drafted by AI for this objective, and every question is editable in the teacher guide.
Part 2 of 4
Key concepts
3 concepts
- 1
To find a point that is one-fourth of the way between two points, first find the midpoint between the two points, then find the midpoint between the starting endpoint and the midpoint you just found.
- 2
When finding a point one-third of the way, you must first find the midpoint between the given endpoint and the point that is one-third of the way through.
- 3
After finding the midpoint, you can use that point and the point one-third of the way to solve for the midpoint of the line.
Part 3 of 4
Practice
12 questions
What formula is used to find the midpoint of a line segment with endpoints (x1, y1) and (x2, y2)?
Find the midpoint of the line segment with endpoints (1, 7) and (5, 3).
Part 4 of 4
Exit ticket
Quick comprehension check
“Point B is one-fourth of the way from point A(1, 2) to point C(9, 10). Find the coordinates of point B.”
Sample answer included in the free materials
Get the materials
Teacher guide, student handout, and slides — free, in Google Docs format
Teacher Guide
Complete lesson plan with answer keys and alternate activities
Student Handout
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