solid figure
a geometric figure with length, width, and height
cube
a three-dimensional shape with six square sides
rectangular prism
A solid figure in which all six faces are rectangles.
sphere
A solid figure with no faces, edges, or vertices.
cylinder
a solid figure with 2 circular bases
pyramid
A solid figure with 5 faces: 1 square and 4 triangles.
cone
a solid figure that has a circular base and one vertex
face
the flat surface of a solid figure
edge
where two faces of a solid figure meet
vertex
the point on a solid figure where two or more edges meet
point
a specific location in space
line
set of points continuing endlessly in two directions
parallel lines
lines that never cross and stay the same distance apart
intersecting lines
lines that cross at one point
perpendicular lines
two lines that intersect to form a right angle
line segment
part of a line that has a beginning and end
ray
a line that begins at one point and continues endlessly in one direction
right angle
an angle that makes a square corner (90 degrees)
acute angle
an angle that is smaller than a right angle (less than 90 degrees)
obtuse angle
an angle that is larger than a right angle (more than 90 degrees)
polygon
a closed figure made up of line segments
side
each line segment of a polygon
quadrilateral
A polygon with 4 sides
parallelogram
A quadrilateral with two pairs of parallel sides
trapezoid
A quadrilateral with one pair of parallel sides
rectangle
a parallelogram with four right angles
square
a parallelogram with four right angles and 4 equal sides (a square is a special rectangle)
equilateral triangle
a triangle with three congruent sides
scalene triangle
a triangle with no congruent sides
isosceles triangle
a triangle with two congruent sides