Study your flashcards anywhere!
Download the official Cram app for free >
 Shuffle
Toggle OnToggle Off
 Alphabetize
Toggle OnToggle Off
 Front First
Toggle OnToggle Off
 Both Sides
Toggle OnToggle Off
 Read
Toggle OnToggle Off
How to study your flashcards.
Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key
Up/Down arrow keys: Flip the card between the front and back.down keyup key
H key: Show hint (3rd side).h key
A key: Read text to speech.a key
55 Cards in this Set
 Front
 Back
Area of a Rectangle

A = bh


Area of a Square

A = s^2


Area of a Triangle

A = 1/2bh


Area of a parallelogram

A = bh


Area of a circle

A = (pie symbol) r^2


Trapezoid !!!!

Trapezoids only have one pair of parallel sides. It's a type of quadrilateral that is not a parallelogram.


Kites

Kites have two pairs of adjacent sides that are equal.


parallelogram

A parallelogram has two parallel pairs of opposite sides.


rhombus

A rhombus is defined as a parallelogram with four equal sides. Is a rhombus always a rectangle? No, because a rhombus does not have to have 4 right angles.


square

A square has two pairs of parallel sides, four right angles, and all four sides are equal. It is also a rectangle and a parallelogram.


A rectangle

A rectangle has two pairs of opposite sides parallel, and four right angles. It is also a parallelogram, since it has two pairs of parallel sides.


A square is always a rectangle.

TRUE A square is always a rectangle.


A trapezoid is NOT a parallelogram.

A rhombus always has four equal sides.


A rectangle has four right angles.

be on the lookout for answer choices that confuse the author's viewpoint with the viewpoints of others.


aREA OF PARALLELOGRAM SAME AS

RECTANGLE


Pi

Pi is approximately equal to 3.14.


A regular hexagon always has six congruent sides.

A rhombus is NOT a type of square. IS NOT


Two polygons are congruent if they are the same size and shape  that is, if their corresponding angles and sides are equal.

A triangle with sides equal to 30, 40, and 50 ft is scalene.


The angles of a triangle sum to 180 degrees.

Square root of 36 = 6


These triangles are not congruent, because the corresponding sides are obviously not equal.

The area of a parallelogram with base of 10 ft and height of 2 ft is 20 square ft.


n^2 = 121. So, n = 11 because 11 * 11 = 121

Not only are the corresponding angles the same size in similar polygons, but also the sides are proportional. We can use the ratios called proportions to help us find missing values.


5^n = 25. So, n = 2

square root of n = 9. So, n = 81


if the corresponding angles of two triangles are congruent, then the triangles are similar.

Pythagorean Theorem
The theorem that relates the three sides of a right triangle: a^2 + b^2 = c^2 WHERE C = HYPOTENUSE 

HYPOTENUSE = SIDE OPPOSITE A RIGHT ANGLE

polygon
A closed plane figure made up of several line segments that are joined together. 

rectangle
A quadrilateral with four 90degree angles. 
line segment
Two points on a line, and all the points between those two points. 

triangle
A threesided polygon. 
regular polygon
A polygon in which all the angles are equal and all of the sides are equal. 

diagonal
The line segment connecting two nonadjacent vertices in a polygon. 
square
A quadrilateral with four equal sides and four 90 degree angles 

A triangle with three sides of different lengths is called a scalene triangle

sum of angles = (n – 2)180°
= (3 – 2)180° = (1)180° = 180° 

equilateral triangle has three equal sides. In this type of triangle, the angles are also equal, so it can also be called an equiangular triangle. Each angle of an equilateral triangle must measure 60 degrees, since the sum of the interior angles of any triangle must equal 180 degrees.

isosceles triangle has just two equal sides, called legs. The third side is called the base.


Now let's classify by angles. An acute triangle has three acute angles, or three angles with a measure of less than 90 degrees

obtuse triangle has one angle that is greater than 90 degrees. If one of the angles in a triangle is a right angle, then the triangle is called a right triangle


Pi

Pi is approximately equal to 3.14.


A regular hexagon always has six congruent sides.

A rhombus is NOT a type of square. IS NOT


Two polygons are congruent if they are the same size and shape  that is, if their corresponding angles and sides are equal.

A triangle with sides equal to 30, 40, and 50 ft is scalene.


The angles of a triangle sum to 180 degrees.

Square root of 36 = 6


These triangles are not congruent, because the corresponding sides are obviously not equal.

The area of a parallelogram with base of 10 ft and height of 2 ft is 20 square ft.


n^2 = 121. So, n = 11 because 11 * 11 = 121

Not only are the corresponding angles the same size in similar polygons, but also the sides are proportional. We can use the ratios called proportions to help us find missing values.


5^n = 25. So, n = 2

square root of n = 9. So, n = 81


if the corresponding angles of two triangles are congruent, then the triangles are similar.

Pythagorean Theorem
The theorem that relates the three sides of a right triangle: a^2 + b^2 = c^2 WHERE C = HYPOTENUSE 

HYPOTENUSE = SIDE OPPOSITE A RIGHT ANGLE

polygon
A closed plane figure made up of several line segments that are joined together. 

rectangle
A quadrilateral with four 90degree angles. 
line segment
Two points on a line, and all the points between those two points. 

triangle
A threesided polygon. 
regular polygon
A polygon in which all the angles are equal and all of the sides are equal. 

diagonal
The line segment connecting two nonadjacent vertices in a polygon. 
square
A quadrilateral with four equal sides and four 90 degree angles 

A triangle with three sides of different lengths is called a scalene triangle

sum of angles = (n – 2)180°
= (3 – 2)180° = (1)180° = 180° 

equilateral triangle has three equal sides. In this type of triangle, the angles are also equal, so it can also be called an equiangular triangle. Each angle of an equilateral triangle must measure 60 degrees, since the sum of the interior angles of any triangle must equal 180 degrees.

isosceles triangle has just two equal sides, called legs. The third side is called the base.


Now let's classify by angles. An acute triangle has three acute angles, or three angles with a measure of less than 90 degrees

obtuse triangle has one angle that is greater than 90 degrees. If one of the angles in a triangle is a right angle, then the triangle is called a right triangle


COMBINING AVERAGES. AVERAGE Of 2 #s is 5. The average of 3 different #s is 7. What is the average of all the #s

5x2=10; 7x3=21; average of both groups=total sum/total # of terms=10+21/2+3=31=6.2


MEDIAN

MIDDLE TERM# IN A GROUP OF TERMS


IF there is an odd # of terms, the MEDIAN is the middle #.

IF there is an even # of terms, the MEDIAN is the average of the 2 middle #s


MODE

# that appears most frequestly in a group of #s


a group of #s may have more than 1 (>1) MODE if

2 or more terms appear an equal # times within the group, AND each appears more than any other terms


NO MODE IF

ALL #s appear the same amount of time


the average of 3 #s is 9; the average of 2 different #s is 6; what is the average of all the #s?

3x9=27;2x6=12;27+12=39;39/5=7.8


unit's digit means the last #

strategies:pick number(s), backsolving, symbolism, rounding off.


tangent means they touch at one point

five less than 4x = 9 MEANS 4X5=9


divided by; ratio of _ to_; per; each. WORD SYMBOLS FOR / DIVIDE

PRODUCT OF MEANS X OR TIMES
WE R PENALIZED 4 UNANSWERED ?S 