- Geometric Relationships ≈ 4 days
- Lines and Planes
- Undefined terms: point, line, plane
- Notation for point, line, plane, parallel, perpendicular
- Parallel Planes
- Identify parts of postulate: hypothesis, conclusion
- Collinear, coplanar
- Vertical angles, complementary, supplementary
- Application of line perpendicular to plane
- Review & Assessment
- Informal and Formal Proofs ≈ 78 + days
- Logic – 12 days
- Logic Concepts
(1)translate written expressions to symbolic representation (p, q, V, →, etc)
(2)negation
(3)conjunction
(4)disjunction
(5)conditional, hypothesis, conclusion, hidden conditional
(6)biconditional
(7)truth values – tables & words
(8)converse (change order)
(9)inverse (insert negation)
(10)contrapositive (change order and negate)
(11)logically equivalent
- Logic Proofs
(1)contrapositive
(2)detachment
(3)syllogism/chain rule/modus tollens
(4)DeMorgan’s
(5)disjunctive inference
- Review & Assessment
- Triangles- Congruent ≈ 25 days
- Review & expand (see resources)
- Corresponding parts (sides, angles, appropriate naming)
- Identify included side, included angle
- Congruent () – define & recognize
- Establish the format of a two-column proof
- SSS
- SAS
- ASA
- AAS
- HL – right triangle
- Corresponding Parts of Congruent Triangles are Congruent(CPCTC)
- Review & Assessment
- Triangles – Similar ≈ 15 days
- Similar triangles – dilation
- AA Similar Proofs
- SSS Similar Proofs
- SAS Similar Proofs
- Pythagorean theorem & converse
- Mean proportional in Right Triangles (Geometric Mean)
- Corresponding Sides of Similar Triangle are in Proportion(CPSTP)
- Review & Assessment
- Triangle Properties ≈ 7 days
- Angle sum in a triangle (measuring angles with protractors & software)
(1)Review classification using acute, obtuse, right,scalene, isosceles & equilateral
- Isosceles Triangle and Properties
(1)Investigate & apply
(2)Proof & indirect proof
- Exterior Angle Theorem
(1)Investigate & apply
(2)Proof & indirect proof
- Triangle Inequality Theorem
(1)Investigate & apply
(2) proof & indirect proof
- Review & Assessment
- Polygons (3 days)
- Exterior angle of a triangle = sum of remote interior angles of a triangle
- Sum of the measures of the interior angles of a polygon
- Sum of the measures of the exterior angles of a polygon
- Measure of an interior angle of a regular polygon
- Measure of an exterior angle of a regular polygon
- Classify polygons by the number of sides and/or angles
- Quadrilaterals (16 days)
- Properties of special quadrilaterals
(1)Parallelogram
(2)Rectangle
(3)Rhombus
(4)Square
(5)Trapezoid
(6)Isosceles Trapezoid
(7)Solving linear equations using props of quads
(8)Solving quadratic equations using props of quads
- Given a specific quad (parallelogram, rectangle, square, rhombus, trapezoid), prove a specified congruence (angleangle, segmentsegment)
- Given specific properties, prove a quad is a parallelogram, rectangle, rhombus, square, trapezoid, isosceles trapezoid)
- Review and Assessment
- Coordinate Geometry≈15 Days
- Linear: Parallel and Perpendicular ( ≈3 days)
- Parallel lines have equal slopes
- Perpendicular lines have negative reciprocal slopes
- Vertical and Horizontal lines are perpendicular
- Point-Slope form of a line
- Slope-Intercept form of a line
- Linear: Distance and Midpoint ( ≈3 days)
- Length (distance) of a line segment
- Midpoint of a line segment
- Find endpoint given one endpoint and the midpoint
- Perpendicular bisector of a line segment
- Linear: Applications/Informal Proofs ( ≈3 Days)
- Justify algebraically the properties of quadrilaterals and triangles
- Using the distance formula to find lengths of sides and diagonals to classify triangles and quadrilaterals
- Using the midpoint formula:(e.g. show that the diagonals bisect each other)
- Using the slope formula to find parallel/perpendicular sides/diagonals
- Circles (≈2 days)
- The center of a circle is an ordered pair
- The relationship between the distance formula and the equation of a circle
- Equation of a circle
- Graphing a circle
- Quadratic-Linear Systems ( ≈1 day)
- Linear Equation
- Quadratic Equation(including the Circle)
- Systems of Equations solved Graphically
- Checking Solutions
- Review and Assessment ( ≈3 days)
- Transformational Geometry (≈12days)
- Reflections (≈2days)
- Line reflections (x-axis, y-axis, x=a, y=b, , )
- Point reflections
- Symmetry
- Orientation, preservation of distance, preservation of angle measure, parallelism, perpendicularity, collinearity, midpoint
- Opposite (indirect) isometry
- Rotations (≈2days)
- About the origin of and , clockwise and counterclockwise
- Orientation, preservation of distance, preservation of angle measure, parallelism, perpendicularity, collinearity, midpoint
- Point reflection, half-turn
- Direct isometry
- Translations (≈2days)
- Orientation, preservation of distance, preservation of angle measure, parallelism, perpendicularity, collinearity, midpoint
- Direct isometry
- Dilations (≈2days)
- Similarity (Corresponding sides are proportional, corresponding angles are congruent)
- Factor of dilation(positive/negative, enlargement/reduction)
- Composition of Transformations (proper notation required) (≈2days)
- Glide Reflection
(1)Orientation, preservation of distance, preservation of angle measure, parallelism, perpendicularity, collinearity, midpoint
- 2 or more of a reflection, rotation, translation, or dilation
- Review and Assessment (≈2days)
- Circles (20 Days)
- Relationships of angles and arcs of a circle
- Central
- Inscribed
- Interior angle formed by 2 intersecting chords
- Exterior angle formed by secants and/or tangents
- Angle formed by tangent and chord on the circle
- Angle formed by tangent and diameter/radius
- Relationship of segments that intersect circles
- Intersection of two chords in the circle
- Find the measures of secants and tangents
(1)(including problems involving quadratic equations)
- Two tangents to the same circle from the same
(1)exterior point
- Relationship of Arcs and Chords
- Arc measure
- Congruent chords and arcs
- Chords equidistant from the center of the circle
- Perpendicular bisector of a chord
- Common tangents of two non-intersecting or tangent circles
- Inscribed and Circumscribed polygons
- Review and Assessment( ≈3 days)
- Geometric Relationships(~7 days)
- Solids
- Use nets to describe prisms, pyramids and cones
- Analysis of 2 and 3 dimensional units of measure
- Properties, area, volume, surface area, lateral area of:
(1)Cone
(2)Cylinder
(3)Prisms
(4)Pyramids
(5)Sphere
- Analyze and solve verbal problems
- Review & Assessment
- Constructions and Locus (≈12days)
- Constructions (≈3days)
- Angle bisector
(1)definition of angle bisector
(2)congruence
(a)Radii
(b)Angle
(c)Triangle (CPCTC)
(3)measurement
(a)Tools of construction and their use
(b)Protractor (validating conjectures)
- Perpendicular bisector
(1)definition of perpendicular lines
(2)bisect a segment
(3)right angles
(4)properties of isosceles triangles (median, altitude, angle bisector to base)
(5)measurement
(a)tools of construction and their use
(b)protractor (validating conjectures)
- Parallel or perpendicular lines thru a given point
(1)2 points determine a unique line
(2)Method of proving lines parallel
(a)Copy an angle (construct congruent angles)
(b)If alternate interior angles are congruent, then the lines are parallel.
(3)Construct lines perpendicular using:
(a)Point on the line
(b)Point NOT on the line
- Equilateral triangles
(1)Interior angle sum of a triangle
(2)Types of triangles
(3)Radii of the same circle are congruent
(4)Equilateral vs. equiangular
- Locus (≈7days)
- Centers related to a triangle
(1)Complete appropriate constructions to locate the:
(a)Incenter (angle bisectors)
(b)Centroid (medians)
(c)Orthocenter (altitudes)
(d)Circumcenter (perpendicular bisectors)
(2)Identify Euler’s line (optional)
- Compound loci
(1)5 Fundamental Loci
(a)Given distance from a point
(b)Equidistant from 2 points
(c)Given distance from a line
(d)Equidistant from 2 parallel lines
(e)Equidistant from 2 intersecting lines
(2)Solve problems involving 2 or more fundamental loci, including centers of triangles (reference G.G.21).
- Review and Assessment (≈2days)