D15

Question 1

Polyhedron

Answer 1

A 3-D solid made entirely by polygons

Question 2

Face

Answer 2

A flat surface that makes up part of a 3D figure

Question 3

Edge

Answer 3

A segment formed by the intersection of 3 or more faces

Question 4

Vertex

Answer 4

A point formed by the intersection of 3 or more faces

Question 5

Are cylinders, spheres, or cones considered polyhedrons ?

Answer 5

Nope

Question 6

Polyhedrons are classified by

Answer 6

The number of faces

Question 7

Regular polyhedron

Answer 7

A polyhedron made of congruent regular polygons

Question 8

There are 5 regular polyhedrons ; these are known as the

Answer 8

Platonic solids
( Tetrahedron, cube, octahedron, dodecahedron, isosohedron)

Question 9

Two types of special polyhedrons are

Answer 9

Prims and pyramids

Question 10

Has two faces called bases that are congruent, parallel polygons.

Answer 10

Prism

Question 11

The other faces of the polyhedron, called ____ ___ , are parallelograms that connect the corresponding sides of the bases

Answer 11

Later faces

Question 12

The later faces meet to form the

Answer 12

Lateral edges

Question 13

Prisms are classified by their

Answer 13

Bases

Question 14

The ____ of a prism is the length of ita altitude, any perpendicular segment from one base to the plane of the other base

Answer 14

Height

Question 15

A prism whose lateral faces are rectangles is called a

Answer 15

Right prism

Question 16

It’s lateral edges are _____ to it’s bases

Answer 16

Perpendicular

Question 17

A prism that is not a right prism is called an

Answer 17

Oblique prism

Question 18

Has only one polygonal base. The other faces of the polyhedron, called lateral faces, are triangles that meet to form the lateral edges.

Answer 18

Pyramid

Question 19

A pyramid whose base is a regular polygon is called a

Answer 19

Regular pyramid.

Question 20

The later faces of a ___ ___ are congruent, isosceles triangles

Answer 20

Regular pyramids

Question 21

The height of each triangular lateral faces is called the ___ ___ of the pyramid

Answer 21

Slant height

Question 22

The radius of the cylinder is the ___ of the base

Answer 22

Radius

Question 23

The segment connecting the centers of the base is called the

Answer 23

Axis

Question 24

Is half a sphere and it’s circular base

Answer 24

Hemisphere

Question 25

The circle that encloses the base of a hemisphere is called the ___ ___ of a sphere

Answer 25

Great circle

Question 26

Is the digram of the surfaces of the three-dimensional figure that can be folded to form the three -dimensional figure

Answer 26

Net

Question 27

Is the intersection of a three-dimensional figure and a plane

Answer 27

Cross section

Question 28

Prism
Number of faces

Answer 28

N+2

Question 29

Prism
Number of vertices

Answer 29

2n

Question 30

Prism
Number of edges

Answer 30

3n

Question 31

Pyramid
Number of faces

Answer 31

N+1

Question 32

Pyramid
Number of vertices

Answer 32

N+1

Question 33

Pyramid
Number of edges

Answer 33

2n

Question 34

Euler’s formula
For any convex polyhedron, the number of faces, F, vertices, V, and edges, E, are related by the formula

Answer 34

F+V=E+2