+0

# Math

0
232
1

1. Triangle MNP is mapped to Triangle M'N'P' using each of the given rules. For which rules is Triangle MNP congruent to Triangle M'N'P'?

(x,y) ->(x,-y)

(x,y)->(x-1,y+6)

(x,y)->(1.6x,1.6y)

(x,y)->(1/6x,1/6y)

(x,y)->(-y,x)

2. The coordinates of the verticies of a polygon are (-4,2), (2,2), (2,-1), (-2,-3), and (-5,-2). What is the perimeter of the polygon? Round each length to the nearest tenth of a unit.

Guest Apr 17, 2017
Sort:

#1
+82779
+1

1.

(x,y) ->(x,-y)

(x,y)->(x-1,y+6)

(x,y)->(-y,x)

2.  (-4,2), (2,2), (2,-1), (-2,-3), and (-5,-2).

Use the distance formula to  find the distance between two consecutive points...for example....

The distance between the last two points is

sqrt [ ( -2 + 5)^2 + (-2 + 3)^2 ]   =  sqrt  3^2 + 1^2]   =  sqrt[10]  ≈ 3.2

Here's a pic with the distances......you can figure the perimeter

CPhill  Apr 17, 2017

### 27 Online Users

We use cookies to personalise content and ads, to provide social media features and to analyse our traffic. We also share information about your use of our site with our social media, advertising and analytics partners.  See details