# Q3, W1: January 6-10 Geometry Teacher Kristin Andreason Geometry Honors 8 January 6-10 Unit 4: Right Triangles and Trigonometry
Standard(s) Taught

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.)

Learning Targets and Learning Criteria
• define geometric mean.
• find measures in similar right triangles using geometric mean.
• apply theorems, postulates, or definitions to prove theorems about triangles, including proving The Pythagorean Theorem using triangle similarity.
Classroom Activities

Monday/Tuesday:

• We will watch a video on Geometric Mean
• We will watch the Section 7, Topic 6 video on Geometry Nation (Right Triangles Similarity–Part 1)
• We will watch a YouTube video (Triangles:  Similar Right Triangles, Geometric Mean) to understand the Right Triangle Altitude Theorem)
• Students will do a Geometric Mean maze

Wednesday:

• We will review the Altitude Rule and the Leg Rule for the Geometric Mean Theorem
• Students will do IXL P-New (Similarity and Altitudes in Right Triangles)

Thursday/Friday:

• Students will do Section 7, Topic 1 in Geometry Nation, writing down notes and will put this page in their ISN
• Students will then do Section 7, Topic 6 and Section 7, Topic 7 in the Geometry Nation Practice book on pages 132-134 (just #5 on page 134)
• Students can finish the IXL if they complete the workbook pages
Assignments Due
• Section 7, Topic 6 of Geometry Nation should be complete and in ISN by January 10.
• Section 7, Topic 1 of Geometry Nation should be complete and in ISN by January 10.
• IXL P-New (Similarity and Altitudes in Right Triangles) due by January 10.