Having the same shape and size. A 2-D shape must match exactly when one figure is placed on top of the other. One of the figures may need to be flipped or turned to prove.
What is congruent?
100
An answer that should be close to an exact answer and easier to calculate.
What is estimation?
100
Two or more angles that add together to equal 90 degrees
What is a complementary angles?
200
The answer to a subtraction problem
What is difference?
200
A quadrilateral with two pairs of parallel sides. Opposite sides are congruent.
What is a parallelogram?
200
Any angle or angle within a shape that is exactly 90 degrees.
What is a right angle?
200
A number sentence that has numbers, operations, and symbols.
What is equation?
200
Two or more angles that add together to equal 180 degrees
What are supplementary angles?
300
the leftover pieces or parts after sharing equally in a group
What is the remainder?
300
Four equal sides and no right angles
What is a rhombus?
300
the measure of an angle
What is degree?
300
numbers and symbols that do not equal anything
What is expression?
300
This is 36 inches or 3 feet.
What is a yard?
400
the number of groups being shared
What is a divisor?
400
A shape that has one pair of parallel sides
What is a trapezoid?
400
This is when a figure is divided into two parts that are mirror images of each other. The division is along the ...
What is line of symmetry?
400
a letter or symbol that represents an unknown number
What is a variable?
400
Sammy says that his angle is 40 degrees, but he says it is obtuse. The tool he needs to practice with more
What is a protractor?
500
The total being shared
What is the dividend?
500
A shape that has two pairs of congruent sides and four right angles
What is a rectangle?
500
the measurement is greater than 90 but less than 180
What is obtuse angle?
500
Forming equal groups, sharing equally, or doing multiple subtractions to determine the value.
What is division?
500
Ava turns on her skateboard a quarter turn, a half turn, and a whole turn. The number of degrees she made
What is 630 degrees?
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4th Grade Math Vocabulary
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