Shapes Flashcards
Symmetric
Split in middle equal sides
Parallelogram
Quadrilateral with two pairs of opposite sides that are parallel to each other
Asymmetric
Cannot be split equal sides
Trapezoid
Quadrilateral with one pair of parallel sides and one pair of non-parallel sides
Irregular Polygon
A polygon with sides and angle measures that are not all the same
Translation / Slide
Changing geometry by moving right, left, up, down, or a combination of these.
Vertices
the corners of the shape
Regular Polygon
A polygon with all sides congruent to each other and all angle measures congruent to each other
Glide Reflection
A geometric transformation consisting of two transformations at once: a translation and a reflection
Quadrilateral
polygon with four vertices and four sides
Rotation / Turn
A geometric transformation consisting of a turn of a shape about a point, often the origin, (0, 0)
Slant height
the distance from the apex (top) to an edge of the base
Face
the sides of the shape
Scalene Triangle
Triangle with no sides or angles congruent to each other. All three sides are of different lengths.
Edge
where these faces meet
Surface Area
The area of the outside surface of a three-dimensional object
Isosceles Triangle
Triangle with (at least) two sides congruent to each other and their two base angles congruent to each other.
Tessellation
A pattern of shapes that fit perfectly together
Concave Polygon
polygon that has at least one interior angle that is more than 180⁰; at least one vertex seems to point inward
Rhombus
Parallelogram with all sides of congruent length.
Equiangular Polygon
polygon with all angles congruent (equal measure)
Polygon
a multi-sided, closed figure made up of vertices (corners) and edges (sides)
Reflection / Flip
A geometric transformation over a line that that produces a mirror image of the original object or image
Equilateral Polygon
polygon with all sides congruent (equal length)
Convex Polygon
polygon for which all interior angles are less than 180⁰; vertices seem to point outward
Lateral Surface Area
The sum of the areas of all faces excluding the base(s) of a solid object
Ex: For a soup can, the area of the curved part (what is normally covered by the label)
