ELM Study Guide Geometry 1

Home > Flashcards > Print Preview

The flashcards below were created by user gerardcb on FreezingBlue Flashcards. What would you like to do?

  1. Complementary Angle
    Sum equals 90o
  2. Supplementary Angle
    Sum equals 180o
  3. Perpendicular Line
    Intersection forms right angle
  4. Transversal
    When 2 lines are cut by 3rd line, 3rd line is a transversal
  5. Scalene Triangle
    No equal sides & no equal angles
  6. Isosceles Triangle
    -2 equal sides

    - If you know value of 1 equal side, you can find out value of all angles
  7. Equilateral Triangle
    - All sides & angles are equal

    - Measure of each angle is 60o
  8. Right Triangle
    The side opposite of the right angle is call hypotenuse
  9. 30-60-90 Triangle
    - It is an equilateral triangle cut in middle

    - The side opposite the 90o angle is always twice as long as the side opposite the 30o angle.

    - The side opposite the 60o angle is always √3 times as long as the side opposite the 30o angle
  10. 45-45-90 Triangle
    - Lives a double life: it is both an isosceles & right triangle

    - The side opposite the 90o angle is always √2 times larger than the two equal sides that sit opposite the 45o angles
  11. The Pythagorean Theorem
    c2 = a2 + b2

    - Pythagorean Triples: {3,4,5}, {5,12,13}, {8,15,17}, {7, 24, 25}, {9, 40, 41}.
  12. Similarity of Triangles
    Similar - of the same shape (Proportional)
  13. Congruence
    Two triangles that are IDENTICAL.

    - Two triangles are congruent if they meet these:



  14. Perimeter of Triangle
    Sum of lengths of triangle;s three sides
  15. Area of Triangle
    1/2 Base x Height
  16. Polygon
    Two-dimensional figure with 3 or more straight sides
  17. Perimeter of Polygon
    Sum of lengths of its sides
  18. Number of Degrees Polygons Hold
    • 180o x (n-2)
    • - Ex. Triangle 180o x (1) = 180o
  19. Parallelogram
    4 sided figure(quadrilateral) whose opposite sides are parallel.

    • - Opposite sides are equal in length
    • - Opposite angles are equal
    • - Adjacent angles are supplementary
    • - Diagonals bisect eachother
  20. Rhombus
    Parallelogram where all 4 sides are equal in length
  21. Area of Parallelogram
    (Base x Height) well....(Base x Altitiude)
  22. Trapezoid
    One pair of sides is parallel while other is not
  23. Area of Trapezoid
    A = 1/2 (b1 + b2) x h
  24. Circumference of a Circle
  25. Area of Circle
  26. Arc of Circle
    Line segment that is wrapped AROUND the circle with 2 points
  27. Chord of Circle
    STRAIGHT line segment ACROSS the circle with 2 points

Card Set Information

ELM Study Guide Geometry 1
2012-04-24 04:09:20

ELM Study Guide Geometry 1
Show Answers:

What would you like to do?

Home > Flashcards > Print Preview