Download Chapter 7 - Mater Academy Charter Middle/ High

Chapter 7
Similar Figures
Lesson Plan
Tuesday January 14 / Wednesday Jan 15
7.1: A Review of Ratios and Proportions
7.2: Similar Polygons
Thursday Jan 16/Tuesday Jan 21
7.3: Proving Triangles Similar
7.4: Similar Right Triangles
Wednesday Jan 22/ Thursday Jan 23
7.4: Similar Right Triangles - continued
7.5: Proportions in Triangles
7.1 Ratios and Proportions
Vocabulary:
 Proportions
 Cross Products
 Unit Amount
 Equivalent proportions
Watch this video:
http://www.khanacademy.org/math/algebra/ratio-proportiontopic/ratios_algebra/v/writing-proportions
7.2 Similar Polygons
Vocabulary:
 Similar Polygons: have corresponding angles and the congruent corresponding sides are
proportional
 Extended Proportions: compare sides within a polygon
 Similarity Statement:
 Scale Factor
Watch these videos:
http://www.khanacademy.org/math/geometry/similarity/similarity-andtransformations/v/quadrilateral-similarity-by-showing-congruent-angles
http://www.khanacademy.org/math/geometry/similarity/triangle_similarlity/v/similar-trianglebasics
7.3 Proving Triangles Similar
Vocabulary:
 AA Similarity
 SAS Similarity
 SSS Similarity
Watch this video:
http://www.khanacademy.org/math/geometry/similarity/triangle_similarlity/v/
similarity-postulates
7.4 Similarity in Right Triangles
Vocabulary
 Altitude
 Geometric mean
 Segment of hypotenuse
adjacent leg
=
adjacent leg
hypotenuse
Watch this video:
http://www.khanacademy.org/math/geometry/similarity/triangle_similarlity/v/
similarity-example-where-same-side-plays-different-roles
7.5 Proportions in triangles
Vocabulary
 Side-Splitter Theorem
 Triangle Angle Bisector Theorem
Watch this video:
http://www.khanacademy.org/math/geometry/similarity/triangle_similarlity/v/
similarity-example-problems