Vocabulary
Sum
What is the answer to an addition problem?
The name for numbers that only have 2 factors.
What are prime numbers.
The sum of any number and 0 is equal to the initial number (2 + 0 = 2)
What is the Identity Property of Addition?
A line that has two end points
what is a line segment?
Name of a triangle with a right angle
What is a right triangle?
factors
What are the numbers ou multiply to get the product?
Shapes that have the same size and shape.
What is congruent?
The product of any number and 1 is equal to the initial number (ex. 2 x 1 = 2)
What is the Identity Property of Multiplication?
Part of a line that begins at a point and continues without end in one direction
ray
Name of a triangle with equal sides.
What is tan equilateral triangle?
Difference
What is the answer to a subtraction problem?
One side of an object or picture is the mirror image of the other side.
What is reflective symmetry?
The grouping of addends does not affect their sum.
(1+2) + 3 = 1 + (2+3)
What is the Associative Property of Addition?
Lines that do not cross.
What are parallel lines?
Name of a triangle with an angle larger than 90 degrees.
What is an obtuse triangle?
Addends
What are the numbers that are added together in an addition problem?
The distance across a circle through its center.
What is the diameter?
The grouping of factors does not affect their product.
(1 x 2) x 3 = 1 x (2 x 3)
What is the Associative Property of Multiplication?
Two lines that intersect at right angles
What are perpendicular lines?
Name of a triangle with two equal sides.
What is an isosceles triangle?
Quotient
What is the answer to a division problem?
The distance from the center of a circle to a point on the circle.
What is the radius?
Changing the order of addends does not change their sum.
What is the Commutative Property of Addition?
A line that divides a figure into two halves that are mirror images of each other
What is a line of symmetry?
Name of a triangle with no equal sides.
What is a scalene triangle?