Unit 2: Math Vocab

Front 1

Circle

Back 1

A line forming a closed loop, every point on which is a fixed distance from the center point.

Front 2

Center

Back 2

A point that is the same distance from all extremities of a figure.

Front 3

Radius

Back 3

The distance from the center to the edge of a circle.

Half of the circle's diameter.

Front 4

Millimeter

(mm)

Back 4

1/1000 of a meter

Front 5

Diameter

Back 5

A straight line going through the center of a circle connecting two points on the circumference.

Front 6

Concentric Circles

Back 6

Circles that have their centers at the same point.

Front 7

Polyhedra

Back 7

A solid with flat faces.

Ex. Pyramids, Prisms, etc.

Front 8

Edges

Back 8

Joining one vertex with another.

Front 9

Centimeter

(cm)

Back 9

1/100 of a meter

Front 10

Oblique Circular Cone

Back 10

A cone where the vertex is not over the center of the circular base.

Front 11

Decimeter

(dm)

Back 11

1/10 of a meter

Front 12

Decameter

(dam)

Back 12

10 meters

Front 13

Meter

(m)

Back 13

A fundamental unit of length in the metric system.

Front 14

Sphere

Back 14

A solid shape in which every point on the surface is the same distance from the center.

Front 15

Faces

Back 15

An individual surface.

Front 16

Surface Area

Back 16

The total area of the surface of a 3-dimensional object.

Front 17

Kilometer

(km)

Back 17

1000 meters

Front 18

Hectometer

(hm)

Back 18

100 meters

Front 19

Vertex

Back 19

A corner of a shape.

Front 20

Slant Height

Back 20

The distance from the top of a cone, down the side to a point on the edge of the base.

Front 21

Perimeter

Back 21

The distance around a two-dimensional shape.

Front 22

Length

Back 22

Distance from end to end or from one point to another.

Front 23

Prism

Back 23

A solid with two identical ends (bases) and flat sides.

Front 24

Right Prism

Back 24

A solid with two congruent, parallel faces, where any cross section parallel to those faces is congruent to the,.

Front 25

Area

Back 25

The measure of how much space there is on a flat surface.

Front 26

Oblique Prism

Back 26

A prism with bases that are not aligned one directly above the other.

Front 27

Pyramid

Back 27

A solid object where the base is a polygon and the sides are triangles which meet at an apex.

Front 28

Median of a Triangle

Back 28

A line segment joining a vertex to the midpoint of the opposite side.

Front 29

Altitude of a Triangle

Back 29

A line that extends from one vertex on a triangle perpendicular to the opposite side.

Front 30

Volume

Back 30

The amount of 3-dimensional space an object occupies.

Front 31

Capacity

Back 31

The total possible about of 3;dimensional space an object could occupy.

Front 32

Circumference

Back 32

The distance around the edge of a circle.

Front 33

Weight

Back 33

"Heaviness." The downward force caused by gravity on an object.

Front 34

Mass

Back 34

A measure of how much matter is in an object.

Front 35

Temperature

Back 35

How hot or cold something is measured in degrees.

Front 36

Apex

Back 36

The point furthest from the base of the object.

Front 37

Cylinder

Back 37

A solid object with two identical flat ends that are circular or elliptical and one curved side.

Front 38

Oblique Cylinder

Back 38

A cylinder where the sides are not perpendicular to the bases.

Front 39

Cone

Back 39

A solid object with a circular flat base joined to a curved side that ends in an apex point.

Front 40

Right Circular Cone

Back 40

A cone that is created when an imaginary line can be made from the apex to the center of the apex to the center of the base and create a right angle.

Front 41

Celcius

Back 41

Temperature scale in which water freezes at 0 and boils at 100.

Front 42

Fahrenheit

Back 42

Temperature scale in which water freezes at 32 and boils at 212.

Front 43

Metric System

Back 43

A measurement system that measures length in meter units, capacity in liters, mass in grams, and temperature in Celsius.