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Geometry
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Gravity
Two-dimensional figures
Terms in this set (33)
point
a location in space
line
straight part of points that continues infinitely in both directions
line segment
A part of a line with two endpoints
ray
A part of a line that starts at one endpoint and extends forever.
right triangle
A triangle that has a 90 degree angle.
obtuse triangle
A triangle where one angle measures over 90 degrees.
equilateral triangle
A triangle with three congruent sides
isosceles triangle
A triangle with 2 congruent sides
scalene triangle
A triangle with no congruent sides
rhombus
a parallelogram with 4 congruent sides
quadrilateral
4 sided polygon
parallelogram
A quadrilateral with two pairs of parallel sides
trapezoid
A quadrilateral with exactly one pair of parallel sides
congruent
Having the same size and shape
similar shapes
Same shape but not the same size: angles are congruent and the sides are proportional
square
A parallelogram with four congruent sides and four right angles.
rectangle
A parallelogram with four right angles
triangle
A polygon with three sides.
hexagon
a polygon with 6 sides
square
A parallelogram with four congruent sides and four right angles.
pentagon
5 sided polygon
polygon
A closed plane figure made up of line segments
octagon
a polygon with 8 sides
right angle
an angle that measures 90 degrees
acute angle
an angle that measures less than 90 degrees
obtuse angle
An angle that measures more than 90 degrees but less than 180 degrees
straight angle
an angle that measures 180 degrees
perpendicular
Intersecting at or forming right angles
intersecting
lines that cross at one point
heptagon
7 sided polygon
nonagon
9 sided polygon
decagon
10 sided polygon
equivalent
equal
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