Math Flashcards
Prime number
More oddish #s, can’t be divided by other numbers (2,3,5,7,11), can only be divided by itself and 1
Composite number
Can be divided by other numbers (4,6,10,15)
Factors
The dividing numbers within a whole number. Used to multiply to form a composite (whole) number
Complimentary angles
Two angles that add up to 90 degrees
Supplementary angles
Angles whose measurements add up to 180 degrees
Isosceles triangle
Two sides are equal (opposite sides)
Scalene triangle
All three sides (therefore all angled$ are unequal
Acute triangle
All three angles = less than 90 degrees
Obtuse triangle
One angle is more than 90
Hypotenuse
Longest side of a right triangle - opposite to the right angle
Congruent triangles
Identical triangles
Similar triangle s
Sides are proportionate but not the same measurement. Angles are identical
Circumference
= to Perimeter of a polygon : C = pi(d), or C = pi2r
Volume of a cylinder
v =pi(r^2)h
Volume of a sphere
4/3pi(r^3)
Factorial (!) ex: 5!
Find the product of every number between 1 & said number (5x4x3x2x1)
Circumference of circle
Pi x d
Square of any number is
times itself
How many sq ft in sq yard
9 square feet, 3 feet in a yard
4 quarts in 1 gal
