Precalculus, Learning Log



Secondary 2 Learning Log – Unit 2Name ________________________CH 2Big Idea: Triangle SimilarityEnduring Understanding: If triangles are similar then corresponding sides are proportional and corresponding angles are congruent.Enduring Question: What does the shadow have to do with it?DayTitleConceptLEARNING TARGETS (What I should understand, know, and be able to do.)ScoreAssessments/Learning Activities13.1Dilation of polygons and other figuresI can determine if a figure is a dilation of another figure.WDYLT?I can find the scale factor.I can find the coordinates of a dilation given a center and a scale factor.I can use a ruler and protractor to determine whether a given diagram illustrates a dilation.23.2Similarity of Triangles/Polygons using TransformationsI can prove similarity using transformations, rotations, reflections and dilations.WDYLT?Identical Twins or Mini-MeI can determine if two figures are similar using translations, rotations, reflections and dilations.Quiz Score: ___Possible: ___What do I need help with?What’s my plan?What did I do?33.3Proving triangles are similar I can prove that two triangles are similar using AA~, SSS~, and SAS~.WDYLT?I can use proportions to show that two triangles are similar.I can use proportions to find missing side lengths of similar triangles or triangle sum theorem to find missing angles.43.4Similarity of right trianglesI can identify the altitude of a right triangle. WDYLT?I know that the altitude divides a right triangle into 2 similar triangles that are also similar to the original triangle. I can use the similar triangles created by an altitude in the right triangle to find unknown lengths.I can use similar triangles to prove the Pythagorean Theorem. Quiz Score: ___Possible: ___What do I need help with?What’s my plan?What did I do?7ReviewTest Score: ___Possible: ___What do I need help with?What’s my plan?What did I do?Day 1-- DilationsWhat is a dilation4 properties of dilations: (1. Shape, orientation and angles preserved; 2. Corresponding sides are parallel; 3. Corresponding sides are proportional; 4 corresponding points are collinear with the center.)Day 2 --Similarity in polygons Definition of similarity in polygons/triangles-- corresponding angles are congruent; corresponding sides are proportionalFind angle measures and missing side measures given triangles are similar Writing similarity statementScale factorDay 3--Prove triangles are similar AA~, SAS~, SSS~Day 4 --Similarity of Right triangles.Missing similarity transformations: ................
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