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Angles of a polygon; sum of interior s= (n-2)180 sum of exterior = 360 One interior + one exterior = 180 G.4 parallel lines and transversal determine if 2 lines are parallel use above angles in G.3 G. 5 Triangles; Congruent: SSS, SAS,ASA, AAS Similar triangles: proportions ( cross-multiply), scale factor 1 to2 same shape, different size G. 6 Triangle inequality; list sides or angles in order according to largest angle or side Longest side is across from largest angle or vice-versa #2 Sum of any two sides is greater than 3rd side sum of two smallest is more than 3rd. #3 given two sides find range of third side by subtracting and adding two sides Ex. Given 15 and 26 as two sides then the 3rd side is between 11> 41 G.7 right triangles Pythagorean theorem  EMBED Equation.DSMT4  know your triples: 3,4,5 5,12,13 7, 24,25 8,15,17 9, 40, 41 Sin, Cos, Tan SOH-CAH-TOA use table or calculator Radicals and Square roots G.8 Quadrilaterals: Parallelograms; rectangle, square, rhombus Trapezoid : Isosceles trapezoid and median of trapezoid Know properties of each and diagonals pg 330-332 in book G.9 Polygons: know the names of each, regular polygon: sides, angles congruent Sum of interior angles Sum= (n-2)180 sum of exterior angles = 360 One interior + one exterior = 180 forms a linear pair Tessellations and in order to not have any gaps, angles need to go into 360 G.10 Circles: know terms of circles: center, radius, diameter, chord, secant, tangent, arcs, arc length and arcs and angles measurements: central angle, inscribed angle, Angle inside circle, angle outside circle, segments with chords, secant, or tangent Book page 506-508 G.11 Constructions use tools on menu bar or a corner of piece of paper: Congruent segments or angles, bisector of angle or segment, perpendiculars G.12 3-dimensional shapes: view points, models G.13 Surface area and volume of solids: prisms, cylinders, cones, pyramids, sphere Will have a formula sheet with all formulas on it G.14 proportions of similar solids Change in one dimension of an object affects area or volume: Ratios are the following:  EMBED Equation.DSMT4  Example double(x 2) the height it will be four times for area ( EMBED Equation.DSMT4 ) And 8 times for volume ( EMBED Equation.DSMT4  = 8 times larger ,567V 2 P Z r s x y      8 ? 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