Chapter 3

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Term

Lesson

Definition

Abscissa

3-7

The first number in the ordered pair

Converse

3-5

The reverse the parts of the Pythagorean Theorem

Coordinate Plane

3-7

The grid that you graph your ordered pairs

Hypotenuse

3-5

the side opposite the right angle

Irrational Number

3-4

Numbers that are not rational

Legs

3-5

the sides that form the right angle.

Ordered Pair

3-7

Any point on the coordinate plane can be graphed with these.

Ordinate

3-7

The second number

Origin

3-7

he point of intersection of the two number lines.

Perfect Square

3-1

When the square root works out to be a perfect whole number.

Pythagorean Theorem

3-5

describes the relationship between the lengths of the legs and the hypotenuse for any right triangle.

Quadrants

3-7

four sections of the coordinate plane.

Radical Sign

3-1

The sign for the square root.

Real Number

3-4

The set of rational numbers and the set of irrational numbers together

Square Root

3-1

is one

of its two equal factors.

X-Axis

3-7

horizontal number line.

X-Coordinate

3-7

The first number in the ordered pair

Y-Axis

3-7

vertical number line.

Y-Coordinate

3-7

The second number

3-1 Notes

Perfect squares - 1 - 1 , 4-2, and so on.

1.21 would come out to be 1.1

√1=1

√4=2

√9=3

√16=4

√25=5

√36=6

√49=7

√64=8

√81=9

√100=10

√121=11

√144-12

√169=13

1. Take the square route

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Notes for Section 3-2

Whole numbers are numbers that start with 0 and go up.

Rational numbers include integers and whole numbers and fractions and decimals that come to an end or repeat.

Irrational Numbers Numbers that go on and on and on. That does not have a pattern or does not have an end. like pie or the square root of 2.

Notes for 3-3.

Taken on paper

Notes for 3-4 -

Taken on paper

Notes for 3-5 -

A2+b2 = C2

how to solve for C

Notes for 3-6 -a2+b2=C2

How to solve for a or b. Almost the same way as solving for C

a=5 b=3 and C=?

5 2+3 2+c2

25+9 = 34

Then find the square root of 34 and that will = C

Square root of 34 = 5.8

5.8 = C