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Strath Haven High School Syllabus Course Title: Level: Geometry College Prep/Honors Course Number: 3121/3142 Grade: 9-12 I. Course Description/Overview This course begins with an informal introduction to geometry, experimenting with drawings, constructions, and geometry software. Using a theme of investigation before formalization, the course examines congruence, similarity, parallel and perpendicular lines, the properties of polygons and circles, perimeter and circumference, area, surface area, and volume. Students will also explore right triangle trigonometry, as well as the formulas for midpoints, distance between points, and the equation of a circle on the coordinate plane. II. Course Objectives Recognize invariants in geometric figures. Develop a literacy of mathematical proof. Derive area formulas for polygons and the surface area and volume formulas for polyhedrons. Understand how scaled figures represent mathematical similarity. Determine well defined formulas and properties of curved figures. Use right triangles and trigonometry to solve other geometric problems. Develop the fundamentals of coordinate geometry including midpoint, distance and transformation. III. Course Content A. Introduction to Geometry Key Concepts/Skills Visualize geometric objects well enough to draw them. Use clear language to draw shapes. Distinguish between drawing a figure and constructing a figure. Use hand construction tools, including paper folding Recognize invariants and use geometry software to test for invariants Apply the Midline Conjecture Search for numerical and spatial invariants Make conjectures and use software to experiment with geometric models B. Congruence and Proof Key Concepts/Skills Develop literacy and tests pertaining to congruent figures. Identify congruent relationships that result from parallel lines cut by a transversal. Write and represent a deductive proof including triangle congruence proofs. Prove that the sum of the angle measures of a triangle is 180o Recognize the difference between experimentation and deduction. Derive and apply the Perpendicular Bisector Theorem. Apply the Isosceles Triangle Theorem to prove parts of a figure are congruent. Classify quadrilaterals. Understand the meaning of converse. Understand the meaning of always, sometimes, and never in mathematics. C. Dissections and Area Key Concepts/ Skills Prove the midline theorem using cuts and rearrangement. Devise and follow algorithms to dissect and rearrange a figure into an equal area figure. Prove and calculate the area of a parallelogram, or a triangle, and of a trapezoid. Prove the Pythagorean Theorem and use it to determine missing lengths in figures. Find the surface area of solids by visualizing their nets. Estimate the volumes of solids. Use formulas for the volumes of certain solids. D. Similarity Key Concepts/Skills Apply scale factor to make similar figures. Decide whether two figures are well scaled copies of each other. Use a scale factor to approximate distances in blue prints and maps. Identify dilation as an enlargement or reduction by looking at the scale factor. Describe the effect of the choice for center of dilation on the resulting dilation. Describe and use the ratio method and the parallel line method to make dilations. Decide how lines parallel to a side of a triangle split the other two sides. Identify corresponding parts of similar triangles. Use the AA, SAS, and SSS tests for similarity in triangles. Explore the relationship in the areas of a polygon and the scaled copy of that polygon. E. Circles Key Concepts/Skills Approximate the area and perimeter of irregular shapes. Find the area of regular polygons. Derive theorems about arcs, chords, inscribed angles, secants and tangents of circles. Look for invariants in circles including the power of a point with respect to a circle. Develop and apply the area and circumference formulas of a circle. F. Using Similarity and a Trigonometric Introduction Key Concepts/Skills Use similar triangles to find unknown lengths. Use similarity to prove theorems. Use the sine, cosine, and tangent functions and their inverses to solve triangles. Solve a triangle given SAS and find the area. Calculate probability using a comparison of areas. G. Coordinate Geometry Key Concepts/Skills Calculate the midpoint and distance of the segment given the endpoints. Write equations of lines with given characteristics. Apply transformations to figures and the graphs of functions in the coordinate plane. IV. Types of Student Assessments and Evaluations Quizzes, tests, oral presentations, and graded homework. V. Grading Policy Grades are based on a point system. Averages are calculated by dividing the total points earned by the student by the total number of possible points. Final grades are determined as follows: first marking period (40%), second marking period (40%), and final exam (20%). VI. Homework Homework is given on a regular basis. Most assignments are due the next day. VII Resources Graphing calculators (TI-Nspire recommended), rulers, protractors, compasses, graph paper and CME Project: Geometry (CME Project Development Team) SHHS Mission Statement: SHHS graduates will possess the ability to apply their knowledge and skills to: act as responsible citizens engaged in their community, nation, and the world around them, exhibit intellectual curiosity and aesthetic appreciation, demonstrate self-awareness and informed critical thinking, maintain personal integrity and healthy decision-making in order to ensure success in post-secondary education, the workplace, and the home. SHHS Respect Policy: All members of the school community are expected to be respectful of each other. Negative comments about anyone’s race, nationality, religion, physical appearance or ability, intellectual capabilities, gender identity, sexual orientation, work ethic, or character are unacceptable and will not be tolerated. Students are encouraged to discuss any concerns with any adult in the building.