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25 Cards in this Set

  • Front
  • Back
a location in space
a straight path that is endless in both directions
line segment
part of a line with two endpoints
part of a line with one endpoint and endless in one direction
parallel lines
lines that will never intersect
perpendicular lines
lines that intersect at a right angle
two rays with a common endpoint
The point where rays, sides or edges meet.
right angle
an angel that measures 90 degrees: it makes a perfect square corner
acute angle
an angle that measure more than 0 degrees and less than 90 degrees
obtuse angle
an angle that measures more than 90% and less than 180 degrees
reflex angle
an angle that measure more than 180 degrees and less than 360 degrees
straight angle
an angle that measures 180 degrees. It is a straight line with a vertex . in the middle
a closed figure mode of line segments connected endpoint to endpoint on one plane. Where each segment intersects exactly one other segment at their common endpoint.
a polygon with three sides
quadrangle or quadrilateral
a polygon with 4 sides
right angle
a triangle with one right angle
acute angle
a triangle with three acute (an angle that measures more than 0 degrees and 90 degrees) angles
Scalene Triangles
a triangle with no sides of the same lengths
a triangle with at least two sides the same length
equilateral triangle
a triangle with three sides the same length
a quadrilateral with only one pair of parallel sides
a quadrilateral with two pairs of parallel sides.
a parallelogram with four right angles.
parallelogram with four sides of the same length