Lesson 7-5
Proportions in Triangles
Use the Side-Splitter Theorem.
Use the Triangle-Angle-Bisector Theorem.
Side Splitter Theorem
Corollary
Triangle-Angle-Bisector Theorem
Pearson Prentice Hall Geometry
Lesson 7-5
Page 1 of 2
Examples
Using the Side-Splitter Theorem
Find y.
Applying Corollaries
The segments joining the sides of trapezoid RSTU are parallel to its bases. Find x and y.
Using the Triangle-Angle-Bisector Theorem
Find the value of x.
HW (7-5): pp. 400-404 #12-24 even, 29-31, 34-37, 40, 44, 48, 50
Pearson Prentice Hall Geometry
Lesson 7-5
Page 2 of 2