myTestBook.com Math Reading Science Practice Test for Grade 1, 2, 3, 4 & 5    
  you are taking the following test:

 
Grade: 8,    Subject: Math,    Topic: Geometry Coordinate Plane Reflection, Rotation, Dilation
See the following text/image to answer questions 1 through 10
 
Question 1:
What action will bring points U and V of the line UV into second and fourth quadrant, respectively?

rotating 90o counter-clockwiserotating 180o counter-clockwise

rotating 90o clockwiserotating 180o clockwise
 
Question 2:
Line UV is dilated using a scale factor 2 (increased twice). Center of dilation is point (0,0). Find new coordinates of point U.

(−6,−6)(−3,−3)

(6,6)(−9,−9)
 
Question 3:
Circle with center K is dilated using a scale factor 0.5 (decreased half in its size). Center of dilation is the center of the circle. Find the coordinates of points where the circle with cut on the x-axis now.

(12,0) and (15,0)(9,0) and (12,0)

(6,0) and (18,0)(9,0) and (15,0)
 
Question 4:
Circle with center K is reflected across the line XY. Find new coordinates of its center point K.

(12,6)(12,0)

(0,0)(−12,0)
 
Question 5:
Triangle LMN is dilated using a scale factor 0.5 (decreased half). Center of dilation is the point L. Find new coordinates of points M and N.

M(23,7) & N(19,10)M(21,5) & N(19,13)

M(21,7) & N(19,10)M(21,7) & N(19,13)
 
Question 6:
Triangle LMN is reflected across the line LS. Find new coordinates point N.

(17,13)(14,13)

(−14,13)(14,−13)
 
Question 7:
Square ABCD is dilated using a scale factor 0.5 (decreased half). Center of dilation is the point D. Find new coordinates of points A, B and C.

A(0,21) & B(4,21) & C(4,17)A(0,21) & B(4,21) & C(6,17)

A(0,25) & B(4,25) & C(4,17)A(0,21) & B(5,21) & C(5,17)
 
Question 8:
Square FGHI is rotated 90o counter-clockwise around the point F. Find new coordinates of the point H.

(3,15)(3,12)

(−3,18)(3,18)
 
Question 9:
Square FGHI is dilated using a scale factor 0.5 (decreased half). Center of dilation is the point H. Find new coordinates of points F and G.

F(−1,10) & G(3,10)F(0,6) & G(3,9)

F(0,9) & G(3,9)F(−3,9) & G(3,9)
 
Question 10:
Square OPQR is dilated using a scale factor 2 (increased twice). Center of dilation is point O. Find new coordinates of point Q.

(25,−8)(29,−8)

(29,−4)(27,−6)
 
  Login to "Submit and Check Answers"
Sponsered Artist: Juhi at JuhiMusic.com   

Copyright © 2005 - 2012 myTestBook.com Inc. All rights reserved.
Contents of myTestBook.com can not be copied for another website or for any other kind of publication.