# MPCS Pre-Algebra 1 year exam vocab

## 109 terms · ~7th grade material ~Created by a 7th grade MPCS student ~study material for the Pre-algebra one year course (Periods 1 and 2) ~This vocab also includes formulas and important information in addition to vocabulary. ~Have fun studying! ~Good luck on your exams! ~kitkat0678 has also created a wordly wise vocabulary set for the 7th grade onlevel class at MPCS. If you are in that class (Periods 1,2,4, and 5,) you might want to check it out! ~If you have any editing suggestions for me or you s…

### Hypotenuse

the side opposite the right angle

### Acute Triangle

triangle that has three acute angles

### Right Triangle

Triangle with one right angle

### obtuse triangle

triangle that has one obtuse angle

### equilateral triangle

triangle that has three congruent sides

### Isosceles triangle

triangle that has at least two congruent sides

### scalene triangle

triangle that has no congruent sides

### equiangular triangle

a triangle that has 3 congruent angles

### 180 degrees

The sum of the angles of a triangle

### acute

less than 90 degrees

### obtuse

more than 90 degrees, but less than 180 degrees

### polygon

a closed plane figure whose sides are segments that intersect only at their end points

### regular polygon

all sides and all angles have the same measure

### convex

a polygon in which a line segment lies completely within the polygon

### concave

a polygon that is not convex

### pentagon

a five-sided polygon

### Hexagon

a six-sided polygon

### heptagon

a seven-sided polygon

### octagon

an eight-sided polygon

### nonagon

a nine-sided polygon

### decagon

a ten-sided polygon

### elevenagon

an eleven-sided polygon

### quadrilateral

a four-sided polygon

### trapezoid

a quadriladeral with exactly one pair of parallel sides

### parallelogram

a quadriladeral with both pairs of opposite sides parallel

### rhombus

a parallelagrom with four congruent sides

### rectangle

a parallelagram with four right angles

### square

a parallelagram with four congruent sides and four congruent angles

### 360 degrees

sum of the angles of a quadrilateral

A= base x height

A= 1/2(b1 + b2)h

### circle

all the points in a plane that are the same distance from a fixed point; not a polygon

### center

the fixed point in the middle of the circle

### radius

the difference between the center and any point on the circle

### diameter

the distance across the circle THROUGH THE CENTER

### circumference

the distance around the circle

### pi

the ratio of a circle's circumference to its diameter for any circle

C=pid OR C=2pi*r

A= pi*r squared

### Pythagorean theorem

a squared + b squared = c squared

### Interior Angle

An angle inside of the polygon

### Exterior Angle

An angle outside of the polygon

### (n-2) * 180

Measurement of all interior angles of a Convex polygon

### (n-2) * 180 / n

Measurement of each interior angle of a regular polygon

### Regular polygon

Sides are congruent and angles are congruent

### Foil Method in multiplying binomials

First, Outer, Inner, Last

### Complementary angles

Two angles whose sum is 90 degrees

### Supplementary angles

Two angles whose sum measures 180 degrees

### Verticle angles

When two lines intersect at one point, the angles that are opposite eachother are these angles; These angles are congruent.

### Hypotenuse

The longest measurement in a right triangle

### Legs

The sides of a right triangle that form the right angle

### Dodecagon

A twelve-sided polygon

### when you find the area

When is the unit squared?

### Transversal

A line that intersects two or more lines at different points

### Corresponding angles

Two angles that are in the same postion on different lines intersected by a transversal; They are congruent.

### Interior angleS

Angles that lay inside the parallel lines

### Exterior angleS

Angles that lay outside the parallel lines

### Alternate interior angles

Angles that lay inside the parallel lines and are on opposite sides of the transversal; They are congruent.

### Alternate exterior angles

Angles that lay outside the parallel lines and are on opposite sides of the transversal; They are congruent.

### Polynomial

A sum of monomials

### Term

Each mononial in a polynomial is a ______.

Has two terms

Has three terms

### Standard form

This is written when the terms are arranged so that the degree of each term decreases (Written according to exponential value from greatest to least)

y= mx + b

### Formula for slope

m= Y2-Y1 over X2-X1 OR m= rise over run

### Negative reciprical

When finding PERPENDICULAR slope, use the _______ ________.

### Input

The first number in a set of coordinates (AKA the domain and X)

### output

The second number in a set of coordinates (AKA the range and Y)

### Domain

All of the inputs

### Range

All of the outputs

### x- intercept

The place/ coordinate where the line crosses the x axis/ horizontal axis

### y-intercept

The place/ coordinate where the line crosses the y axis/ vertical axis

### Slope

The steepness of a line (How steep the line is)

### Relation

A group of inputs and outputs (A group of coordinates) that can be graphed

### zero

The x coordinate is always _______ when you are finding the y intercept.

1

4

9

16

25

36

49

64

81

100

121

144

169

196

225

256

289

324

361

400

.5

.25

.75

.125

.375

.625

.875

.2

.4

.6

.8

.3 repeated

.6 repeated