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“Euclidean Geometry” – UNIT I: Logic and Reasoning, Points/Lines/Planes/Angles High School Mathematics “Geometry” published by HOLT, RINEHART, & WINSTON Target Time: 15-17 days ESSENTIAL STANDARD ESSENTIAL QUESTION DEPTH for MASTERY Sections COMMENTS #2—Uses algebraic skills and concepts to solve geometric problems throughout geometry What algebra skills and concepts are utilized in geometry? All Throughout unit Stress algebra #5—Recognizes valid deductive reasoning; constructs and uses if-then, converse, inverse, and contrapositive statements. What are the different forms of a conditional statement? All 2.2 12.3 #8—Identifies, describes, and contrasts points, lines, planes, segments, and rays What are the characteristics of points, lines, planes, segments, and rays? All 1.1 How are segments and angles measured and classified? All 1.2 1.3 What properties are associated with points, segments, angles, lines, and planes? All 1.1 1.2 1.3 1.4 How are lines, planes, and angles related? All How are the distance and midpoint formulas used? All #9—Identifies, defines, estimates, and measures segments and angles (acute, obtuse, right, straight, complementary, supplementary, adjacent, vertical, congruent, and linear pair) #10—Identifies and defines or describes properties associated with points (distance, between, collinear, coplanar), segments (midpoint, congruence, interior, exterior), and lines and planes (perpendicular, parallel, intersecting) #12—Recognizes parallel lines and planes, skew lines, and pairs of angles formed when two lines are cut by a transversal (alternate and same side, interior and exterior, corresponding) #45—Applies the distance and midpoint formulas 3.3 (skew p380) 5.6 Parallel and Perpendicular Postulates ESSENTIAL QUESTION DEPTH for MASTERY Sections #1—Solves problems and practical applications using appropriate approaches and tools (including calculators and computers) and judges the reasonableness of results #4—Uses inductive and deductive reasoning to reach conclusions, identifies conjectures and counterexamples, and describes the nature of a deductive mathematical system How do we solve problems and practical applications and judge the reasonableness of the results? All Throughout unit What is the difference between inductive and deductive reasoning? All 2.1 2.2 2.5 #6—Uses formal and/or informal logical reasoning processes How do you use formal and informal reasoning processes? All 2.1 2.2 2.5 #7—Uses inductive and deductive reasoning to prove conjectures in written form such as paragraph, two-column, or flow chart How do your prove theorems and how do you demonstrate conjectures? All 2.4 2.5 IMPORTANT STANDARD #13—Applies basic facts about points, lines, and planes, and about perpendicular and parallel lines and planes. How are points, lines and planes related? All 1.1 1.2 1.4 3.3 3.8 COMPACT STANDARD ESSENTIAL QUESTION DEPTH for MASTERY Sections #3—Uses visualization skills to explore and interpret both two- and three- dimensional geometric figures using such topics as projections, cross sections, and locus problems How can visualization skills help you explore both solid and plane geometry? Lines, points, planes, two- and three- dimensional 1.1 COMMENTS Deemphasize formal proof and emphasize logic COMMENTS COMPACT STANDARD #16—Uses tools such as compass and straightedge, paper folding, tracing paper, mira, or computer to construct congruent segments, angles, triangles, and circles; an angle bisector; a perpendicular bisector; a perpendicular line from a point on a line; parallel lines; proportional segments; tangents; and inscribed and circumscribed polygons #46—Finds the slope of a line, writes an equation of a line, and graphs equations of lines #47—Finds the coordinates of the point of intersection of two lines, using algebra, graphing, and appropriate technology ESSENTIAL QUESTION DEPTH for MASTERY Sections What are the basic tools and construction methods used in geometry? OMIT proportional segments; tangents; and inscribed and circumscribed polygons Throughout unit How do we find the slope, equation, and graph of a line? All Supplement How do you find the coordinates of the point of intersection of two lines in the coordinate plane? All Supplement COMMENTS EOCT Domains Taught in this Unit: Logic and Reasoning; Points, Lines, Planes, and Angles; Coordinate Geometry