Shape&Ratio

Question 1

Ratio is…

Answer 1

a comparision of two or more quantities

Question 2

15mmm : 40mm

Answer 2

3:8

Question 3

15mmm : 40mm in form of 1 : n

Answer 3

1 : 8/3

Question 4

6 cm : 8cm

Answer 4

3 : 4

Question 5

Original shape:

Answer 5

object

Question 6

new shape:

Answer 6

image

Question 7

scale factor:

Answer 7

image side length / object side length

Question 8

how to identify similar shapes

Answer 8

all corresponding angles are equal / sides have the same ratio

Question 9

How to find the center of enlargment

Answer 9

Draw rays

Question 10

How to find image

Answer 10

Count from center of enlargment how many boxes one point is and divide it by scale factor. Example: scale factor 1/3. OA: (3 , 9) OA’: ( 1 , 3)

Question 11

direct distance is…

Answer 11

a straight line between points

Question 12

A map scale of Nordor is 1cm : 10km. If the distance between town A and B is 4 cm on the map what is the actual distance

Answer 12

40km

Question 13

map ratio:

Answer 13

no units , written in form of 1:n

Question 14

Map scales as map ratio: 1cm:5km

Answer 14

1: 500000

Question 15

Map scales as map ratio: 2cm:25km

Answer 15

1: 1250000