an equation showing that two ratios are equal is a

proportion

the coordinates of a point on a grid are written as an

ordered pair

a special ratio that compares a number to 100 and uses the symbol%

percent

the set of whole numbers and their opposites, the number -3 is an

integer

Write the following decimals as percents: 1. .77 2. .06 3. 0.9 4. 1.04

1. 77% 2. 6% 3. 90% 4. 104%

Write the following percents as decimals: 1. 42% 2. 80% 3. 1% 4. 131%

1. .42 2. .8 3. .01 1.31

What is 10% of 40

4

What is 12% of 100

12

What is 99% of 60?

59.4

What is 100% of 81?

81

What is 45% of 360?

162

a base-10 place value system

decimal system

an exact spot usually represented by a dot

point

a straight path that has no thickness and extends forever in opposite directions, 2 points

line

a flat surface that has no thickness and extends forever, 3 points

plane

a part of a line with one end point, extends forever in one direction

ray

a part of a line with two definite endpoints

line segment

figures with the same shape and size

congruent

How can you indicate congruent lines?

tick marks

What is the tool used to measure angles?

protractor

two angles that add up to a 90 degree angle

complementary angles

two angles that add up to 180 degrees

supplementary

How many degrees are in a straight line?

180

two rays with a common endpoint

angle

the common endpoint of two rays forming an angle is called what

vertex

angles are measured in what units

degrees

What is a right angle?

90 degrees

angles less than 90 degrees

acute

angles more than 90 degrees

obtuse

angle that equals 180 degrees

straight angle