Geometry Definitions

Some essential definitions in geometry

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  1. A branch of mathematics that studies the properties of two and three dimensional figures such as triangles, circles, cylinders, and spheres.

  2. Missing Word
    Correct Answer:
    Geometry

    Reference

    Mathematics for college students

  3. A geometric figure that has position but no length, width, or depth

  4. Missing Word
    Correct Answer:
    point

    Reference

    Mathematics for college students

  5. A part of a line that consists of points A and B and all points in between

  6. Missing Word
    Correct Answer:
    line segment

    Reference

    Mathematics for college students

  7. A point that divides a line segment into two parts of equal length

  8. Missing Word
    Correct Answer:
    midpoint

    Reference

    Mathematics for college students

  9. When two line segments have the same measure, we say that they are

  10. Missing Word
    Correct Answer:
    congruent

    Explanation

    if m(AM) equals m(BM), it is written as  m(AM) ≅ m(BM)

    Read the symbol ≅ as “is congruent to.”

    Reference

    Mathematics for college students

  11. It is the part of a line that begins at some point (say, A) and continues forever in one direction

  12. Missing Word
    Correct Answer:
    ray

    Reference

    Mathematics for college students

  13. A figure formed by two rays with a common endpoint

  14. Missing Word
    Correct Answer:
    angle

    Reference

    Mathematics for college students

  15. A common endpoint when two rays meet at that endpoint to form an angle

  16. Missing Word
    Correct Answer:
    vertex

    Reference

    Mathematics for college students

  17. The rays that meet at a common endpoint to form an angle

  18. Missing Word
    Correct Answer:
    sides

    Reference

    Mathematics for college students



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