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Congruent
Exactly the same length.
Parallelogram
Four sided, closed shape where opposite sides are the same length.
Sum
The answer to a problem when you add two or more numbers.
Tally Chart
A table or chart in which tally marks (instead of numbers or pictures) are used to record data.
Analog Time
Time shown on a traditional two or three hand clock. The wall clock in the classroom shows analog time.
Digital Time
Time shown on a digital clock. Hours, minutes, and seconds are separated by :. Example: 11:03:20 = 11 hours, 3 minutes, 20 seconds
Square
. A parallelogram with all sides and angles equal. A square is also a rectangle and a rhombus
Triangle
A polygon with exactly 3 sides, 3 angles, and 3 vertices.
Unit Square
A square with each side 1 unit in length. The area of a unit square is 1 square unit.
Volume
. The amount of space that is in a 3-D shape. Called cubic units
Whole Numbers
A counting number or zero
Dividend
When dividing one number by another, the number that is being divided. Example: 24 - 6 = 24 is the dividend
Acute Angle
. An angle with a measure greater than 0 and less than 90 degrees
Acute Triangle
A triangle in which all interior angels are acute
(between 0 and 90 degrees)
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Adjacent Angles
Two angles with a common side and a common vertex but no overlap
