is a midpoint of .
To find the midpoint between two points (average
-coordinates, average -coordinates).
Write the equation of the line through points
Read Math Notes box in Lesson 2.3.2 on linear equations from slopes and/or points.
Calculate the slope between points
Using the slope, the
- and -coordinates from point or , and slope intercept form ( ). Solve for .
Is BD a height of
? Use slope to show that is perpendicular to AC.
Compare the slopes of segment
and segment . What do you notice?
What is the perimeter and area of
Use the Pythagorean Theorem to find the length of all missing sides.
Use the eTool below to solve the problem.
Click the link at right for the full version of the eTool: Int1 8-28 HW eTool