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Flashcards

Geometry

Vinuthna Vemireddy Mathematics 8 English 60 cards

Geometry

Cards in this deck (60)

  1. 1The word geometry meansto measure the earth
  2. 2The Elements was written byEuclid
  3. 3lineextends infinitely in two opposite directions
    (<--->
    A B)    line
  4. 4line segmentis a portion of a line having two endpointsline segment
  5. 5rayportion of a line having one endpointray
  6. 6angletwo rays sharing a common endpointangle
  7. 7vertexcommon endpointvertex
  8. 8intersecting lineslines that have one point in common (only intersect at one point)intersecting lines
  9. 9planeflat surface that extends infinitely in all directionsplane
  10. 10parallel lineslines in the same plan that never intersectparallel lines
  11. 11curvescurves
  12. 12closed curvesbegins and end at the same pointclosed curves
  13. 13simple closed curveshas no point of intersectionsimple closed curves
  14. 14polygonclosed curve made up of line segments
  15. 15quadrilateralquadrilateral
  16. 16parallelogramboth pairs of opposite sides are parallelparallelogram
  17. 17trapezoidtrapezoid
  18. 18Congruenthave the same shape and sizeCongruent
  19. 19similar shapeshave the same shape but not the same sizesimilar shapes
  20. 20skew linestwo lines in space that don't intersect nor are parallel
  21. 21perpendicular lineslines that form a right angle when they intersectperpendicular lines
  22. 22complementary linestwo angles with a sum of 90º
  23. 23supplementary anglestwo angles with a sum of 180º
  24. 24circle is usually named bythe center
  25. 25radiusradius
  26. 26diameterdiameter
  27. 27arcarc
  28. 28chordchord
  29. 29the center of the circle is the...vertex of the angle
  30. 30the angles in a triangle total...180º
  31. 31Equiangular triangleshave three congruent acute anglesEquiangular triangles
  32. 32equilateral triangleshave 3 congruent sides
  33. 33isosceles triangleshave 2 congruent sidesisosceles triangles
  34. 34scalene triangleshave no congruent sidesscalene triangles
  35. 35triangles are similar when..two angles of one are congruent to two angles of the other (abbreviated AA)
  36. 36congruent triangles have...the same shape and size (abbreviated SSS)
  37. 37two triangles are congruent if...two angles and the included side of the one triangle are congruent to the corresponding angles and the side of the triangle (abbreviated ASA)
  38. 38perimeter of rectangleP= 2L + 2W
  39. 39perimeter of a squareP = 4s
  40. 40perimeter of a triangleP = a + b + c
  41. 41Circumference (distance around the circle)C = πd
    C = 2πr
  42. 42area of a rectangleA = lw
  43. 43area of a squareA = s2 (side squared)
  44. 44area of a parallelogramA=bh
  45. 45area of a triangleA=1/2bh
    (heigh=altitude)
  46. 46area of a trapezoidA= h(b1 + b2)/2
  47. 47area of a circleA= πr2 (radius squared)
  48. 48surface area of a rectangular prismSA= 2wl + 2wh +2lh
  49. 49lateral surface area of a rectangular prism (lateral means side)LA= 2wh + 2lh
  50. 50surface area of a cubeSA= 6e2(squared)
  51. 51lateral surface area of a cubeLA= 4e2 (squared)
  52. 52surface area of a square pyramidA= s2
    +
    A= (1/2BI) * 4
  53. 53surface area of a cylinderSA = 2πrh + 2πr2
  54. 54VolumeV = lwh
  55. 55Volume of a cubeV= e3
  56. 56Volume of a square pyramidV = 1/3s2h
  57. 57Volume of a cylinderV = πr2h
  58. 58Volume of a coneV= 1/3πr2h
  59. 59hypotenusehypotenuse
  60. 60Pythagorean's rule isc2 = a2 + b2

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8 Mathematics Flashcards on Geometry , created by Vinuthna Vemireddy on 15/06/2016.
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