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What is 1 + 3?
Translating numerals into explanded form & word form
a symbol used to represent a number
A way to write numbers by showing the value of each digit
The value of a digit based on its position within a number.
The distance around a figure
the number of square units needed to cover a flat surface
(geometry) a plane rectangle with four equal sides and four right angles
a parallelogram with 4 congruent sides
a parallelogram with four right angles
A quadrilateral with two pairs of parallel sides
A four-sided polygon
a closed plane figure bounded by straight sides
lying in the same direction and always the same distance apart
a quadrilateral with two parallel sides