MAFS.912.G-SRT.2.4: Prove theorems about triangles. (Theorems include: Triangle Proportionality Theorem or Side Splitter Theorem – a line parallel to one side of a triangle divides the other two proportionally.)
MAFS.912.G-SRT.2.5: Use congruence and similarity criteria for triangles to solve problems and to prove relationships in geometric figures.
|Learning Targets and Learning Criteria|
- apply theorems, postulates, or definitions to prove theorems about triangles and proportional parts of parallel lines, including:
- Triangle Proportionality Theorem- A line parallel to one side of a triangle divides the other two proportionally.
- Converse of Proportionality Theorem- If a line divides two sides of a triangle proportionally, then it is parallel to the third side
- Triangle Midsegment Theorem (side splitter theorem as applied to triangle) – a midsegment of a triangle is parallel to one side of a triangle and its length is one-half the length of that side.
- Students will finish the Similarity Scavenger Hunt
- Students will take guided notes on Triangle Proportionality Theorem and Proportional Parts & Parallel Lines
- Students will do a practice sheet on these theorems.
- Students will do IXL P.10.
- Students will do guided notes on Parts of Similar Triangles and the Angle Bisector Theorem.
- Students will do practice problems on each of these.
- We will review for SMT #2.
- Similarity Scavenger Hunt is due by December 10.
- IXL P.10 is due by Friday December 13.
All IEP and ESOL accommodations are provided daily.