AP Notes, Outlines, Study Guides, Vocabulary, Practice Exams and more!

Geometry Note Cards Flashcards

Note cards for the Semester 2 Final

Terms : Hide Images
405676027Areameasure of the region enclosed by the figure in a plane1
405676028Surface Areathe sum of the areas of all the faces of a solid figure2
405676029Baseany side of a rectangle3
405676030Altitudeany segment perpendicular to the base with one endpoint on the base and the other on the opposite side4
405676031Heightthe length of the altitude5
405676032Apothemthe ⊥ segment from the center of the polygon's circumscribed circle in a regular polygon6
405676033Annulusthe region between two concentric circles7
405676034Right TriangleA triangle with exactly one right angle8
405676035Hypotenusethe side of a triangle opposite the right angle (the longest side)9
405676036Legsthe other two sides of the triangle (Not hypotenuse) attached to right angle10
405676037Pythagorean TheoremIn a right triangle, if A and B are legs, and C is the hypotenuse then A²+B²=C²11
405676038Pythagorean Triples3 positive integers that work in the Pythagorean theorem12
405676039Primitives3-4-5 or 5-12-13 or 7-24-25 or 8-15-1713
405676040Linear and Quadratic expressions...14
405676041Multiplesthe resulting Pythagorean triples after being multiplied by a number15
405676042Distance FormulaIf coordinates of A and B are (X1,Y1) and (X2,Y2) then AB²= (x2-x1)²+ (y2-y1)²16
405676043Equation of a Circle(x-h)² + (y-k)² = r²17
405676044PolyhedronA solid formed by polygons that enclose a single region of space18
405676045Facesthe flat polygonal surfaces of a polyhedron19
405676046Tetrahedrona Polygon with 4 faces20
405676047Hexahedrona polygon with 6 faces21
405676048Heptahedrona polygon with 7 faces22
405676049Decahedrona polygon with 10 faces23
405676050Regular dodecahedron12 faces, each meet vertex in exactly the same way24
405676051Basesthe faces that are not the lateral faces25
405676052Lateral Edgeswhere the lateral faces meet26
405676053Prisma polyhedron with 2 bases that are congruent and parallel polygons. And the lateral faces are parallelograms formed by segments connecting the corresponding vertices of the bases27
405676054Pyramida shape with 1 base. triangle faces28
405676055Spherethe set of all points in space at the given distance (r) from the given point (c)29
405676056HemisphereHalf of the sphere, base is the Great cicle30
405676057Cylindercircle bases, axis is line segment of two centers, right cylinder31
405676058Cone1 circular bases, has vertex,32
405676059Volumemeasurement of the amount of space an object takes up33
405676060Ratioan expression that compares 2 quantities by division34
405676061Proportiona statement of equality between 2 ratios35
405676062Similar Polygonstwo polygons are similar iff the corresponding angles are congruent, and the corresponding sides are proportional36
405676063Sinϴratio of opposite : hypotenuse37
405676064cosϴratio of adjacent : hypotenuse38
405676065tanϴratio of opposite : adjacent39
405676066Rectangle Area Conjecturethe area of a rectangle is given by the formula a=bh where b is length of base and h is the height of the rectangle40
405676067Parallelogram Area Conjecturethe are of a parallelogram is given by the formula A=bh where A is the area b is the length and h is hte height41
405676068Triangle Area Conjecturethe area of a triangle is given by the formula A=1/2bh where A is the area, b is the length of the base, and h is the height of the triangle42
405676069Trapezoid Area Conjecturethe area of a trapezoid is given by the formula A=h(b1+b2)/2 where A=area, b1+b2=length of bases, and h=height43
405676070Kite Area Conjecturethe area of a kite is given by the formula A=1/2d₁d₂, where A is the area, and d₁ and d₂ are the lengths of the two diagonals44
405676071Regular Polygon Area Conjecturethe area of a regular polygon is given by the formula A=1/2asn where A is the are, a is the apothem, s is the length of each side, and n is the number of sides45
405676072Circle Area Conjecturethe area of a circle is given by the formula A=∏r² where A is the are and r is the radius of the circle46
405676073Sector of a CircleA region bounded by two radii of the circle and their intercepted arc47
405676074Segment of a Circlethe region between a chord of a circle and the included arc48
405676075Area of a sector(angle°/360°)(πr²)49
405676076Area of a Segment(angle°/360°)(πr²) - 1/2bh50
405676077Area of an annulusπR²-πr²51
405676078Explain the process of finding the surface area of a Prism, Cylinder, Pyramid and Cone...52
405676079Pythagorean TheoremIn a right triangle, if A and B are legs, and C is the hypotenuse then A²+B²=C²53
405676080Converse of the Pythagorean TheoremIf the lengths of the 3 sides work in the pythagorean theorem. then the triangle is a right triangle54
405676081Isosceles Right Triangles ConjectureIn an isosceles right triangle, of the legs have length x then the hypotenuse has length x√2 45-45-9055
40567608230-60 Right Triangle Conjecturein a 30-60 right triangle, if the opposite side the 30 degree angle has length x, the the hypotenuse has length x√356
405676083Pythagorean Multiples ConjectureIf you multiply all lengths of a right triangle by the same #, then it is still a right triangle57
405676084Tangent ConjectureA tangent to a circle is ⊥ to the radius drawn to the point of tangency58
405676085Prism-Cylinder Surface Area and Volume ConjecturesIf B is Area of base of a prism or a cylinder. H= height of solid. then the formula is V=BH59
405676086Pyramid-Cone Surface Area and Volume ConjecturesIf B= Area of base of pyramid or cone and H= height of solid. the Formula is V=1/3BH60
405676087Sphere Volume Conjecturethe volume of a sphere with radius r is given by the formula V=4/3πr³61
405676088Sphere Surface Area Conjecturethe surface area, SA, of a sphere with radius r is given by the formula SA=4πR²62
405676089SSS Similarity Conjectureif the 3 sides of one triangle are proportional to the 3 sides of another triangle, then the triangles are similar63
405676090AA Similarity ConjectureIf two angles in a triangle are congruent to two angles in another triangle, then the triangles are similar.64
405676091SAS Similarity ConjectureIf two sides of one triangle are proportional to two sides of another and their included angles are congruent, then the triangles are similar.65
405676092Proportional Parts ConjectureIf two triangles are similar, then the corresponding altitudes, medians, and angle bisectors are proportional to the corresponding sides.66
405676093Proportional Area Conjectureif 2 similar polygons have lengths of corresponding sides in the ratio of m/n then their areas are in the ratio of (m²/n²)67
405676094Proportional Volume Conjectureif corresponding dimensions in the ratio of m/n then their volumes are in the ratio of (m³/n³)68
405676095Parallel Proportionality ConjectureIf a line parallel to one side of a triangle passes through the other two sides, then it divides the other two sides proportionally. Conversely, if a line cuts two sides of a triangle proportionally, then it is parallel to the third side.69
405676096Extended Parallel Proportionality ConjectureIf two or more lines pass through two sides of a triangle parallel to the third side, then they divide the two sides proportionally.70
405676097Sine, Cosine and Tangent of right triangles...71
405676098Law of SinessinA/a=sinB/b=sinC/c For a triangle with angle measures A,B,C and side lengths a,b,c72
405676099Law of Cosinesc²=a²+b²-2abcosC73
405676100Multiplying, Dividing Polynomials...74
405676101Factoring Trinomials...75
405676102Simplifying Rational Expressions...76
405676103Perfect Squares and Square Root Properties...77
405676104Deductive Reasoning (4 basic rules)...78
405676105Inductive Reasoning...79
405676106Direct Proofs...80
405676107Indirect Proofs...81
405676108Conditional Proofs...82
405676109Geometric Proofs...83
405676110Properties of Algebra and Equality...84
405676111Probabilitythe likelihood that a particular event will occur85
405676112Conditional Probabilitythe probability that an event will occur given that oneor more other events have occurred86
405676113Expected ValueThe weighted average of all of the possible outcomes of a probability distribution.87
405676114Venn Diagrams...88

Need Help?

We hope your visit has been a productive one. If you're having any problems, or would like to give some feedback, we'd love to hear from you.

For general help, questions, and suggestions, try our dedicated support forums.

If you need to contact the Course-Notes.Org web experience team, please use our contact form.

Need Notes?

While we strive to provide the most comprehensive notes for as many high school textbooks as possible, there are certainly going to be some that we miss. Drop us a note and let us know which textbooks you need. Be sure to include which edition of the textbook you are using! If we see enough demand, we'll do whatever we can to get those notes up on the site for you!