Math-mazing Math Terms

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right angle

90 degree angle

ray

A part of a line, with one endpoint, that continues without end in one direction

vertex

A point where two or more straight lines meet.

place value

The value of where the digit is in the number.

trapezoid

a closed shape that has at least one pair of parallel lines

standard algorithm

a step-by-step way to solve a problem

protractor

a tool used to measure angles

acute angle

angle that is less than 90 degrees

obtuse angle

angle that is more than 90 degrees

decompose

break down into smaller parts

symmetry

having the same shape, size, and position on both sides of a dividing line

formula for the area of a quadrilateral

l x w

parallel lines

lines in the same plane that never intersect

perimeter

the distance around an object

area

the surface space an object covers

straight angle

180 degree angle

angle

A figure formed by two rays with a common endpoint

congruent

Having the same size and shape

commutative property

The Commutative property states that order does not matter. Multiplication and addition are commutative.

perpendicular lines

Two lines that intersect to form right angles

polygon

a closed figure with at least 3 sides

point

a dot that represents a location in space

line

a straight figure that extends infinitely in both directions

line segment

a straight figure with two end points

strategy

a way of solving a problem

formula for perimeter

add up all the sides

demonstrate

show

quotient

the answer to a division problem

product

the answer to a multiplication problem

difference

the answer to a subtraction problem

sum

the answer to an addition problem

multiple

the number we get when we multiply one number by another

factor

the numbers multiplied together to get a product

prime number

the only factors of this number are one and itself

composite number

this number has more than two factors

convert

to change

determine

to make a decision

intersecting lines

two lines that intersect forming two acute angles and two obtuse angles.


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