10-19-22 Lesson Plans for Honors Geometry

Standards Addressed

MGSE9-12.G.SRT.5  Prove theorems about triangles: A line parallel to one side of a triangle divides the other two proportionally.

MGSE9-12.G.SRT.3  Use the properties of similarity transformations to establish the AA criterion for two triangles to be similar

MGSE9-12.G.SRT.2  Given two figures, use the definition of similarity in terms of similarity transformations to decide if they are similar; explain, using similarity transformations, the meaning of similarity for triangles as the equality of all corresponding pairs of angles and the proportionality of all corresponding pairs of sides.

Learning Targets/Success Criteria                     

 I can solve problems involving similar triangles by

  -  AA triangle similarity postulate, SAS and SSS triangle similarity theorems

  - identifying similar figures

  -finding the scale factor of similar figures

  - finding a missing side of a figure using proportions

  -  triangle proportionality theorem

Introduction/Connection

Daily 10

Direct Instruction/Guided Practice  

Quiz

complete and review yesterday's worksheet

IXL (P8) with a grade of 90 or better

Triangle Similarity Worksheet 2

Discuss Triangle Proportionality Theorem

Independent/Collaborative Practice/Differentiation

Monitoring students throughout lesson as some students will work individually and some will work with partners.  Some students will work ahead on additional assignments or enrichment activities.

Summarize/Check for Understanding

Teacher questioning for understanding/clarification.

Guided practice will be checked for accuracy and corrections will be made.