Flashcards in 12.1-12.3 Deck (21):

1

## Lateral faces

### Faces that are not bases

2

## Surface area

### The sum of the areas of the faces

3

## Net

### 2D representation of a 3D shape

4

## Oblique prism

### Lateral edges are not perpendicular to bases

5

## Lateral edges

### Segments that connect vertices of lateral faces to bases

6

## Lateral area

### Sum of the areas of the lateral faces

7

## Right prism

### Lateral edge is perpendicular to both bases

8

## Cylinder

### A solid with congruent circular bases

9

## Polyhedron

### A solid that is bounded by polygons which are called faces

10

## Regular polygon

### All faces are congruent

11

## Convex polyhedron

### None of the faces are concave (inward )

12

## Platonic solids

### Regular polyhedrons cube(6), tetrahedron (4), octahedron (8), dodecahedron(12), icosahedron (20)

13

## Euler's theorem

### F+V = E+ 2

14

## Cross section

### Intersection of plain and solid

15

## Rectangular prism SA

###
2B + Ph

B= area of base

P= perimeter

H is height

16

## Triangular prism SA

###
2B + Ph

Base = triangular

17

## Cylinder SA

### 2 pie r squared + 2 pie r h

18

## Regular Pyramid SA

### B + Pl/2

19

## Cone SA

### Pie r squared + pie r l

20

## Sphere SA

### 4 pie r squared

21