+0  
 
0
158
1
avatar+177 

Write a paragraph proof of Theorem 3-8: In a plane, if two lines are perpendicular to the same line, then they are parallel to each other. 

 

party.girl286  Nov 2, 2017
 #1
avatar+87294 
+2

Here's my best shot

 

r, t are perpendicular to s     given     angle 3 = angle 4  = angle 5 = angle 6    definition of perpendicular lines   .....so angle 3 = angle 6 and by Euclid, Book 1, Proposition 27.....

If a straight line falling on two straight lines makes the alternate angles equal to one another, then the straight lines are parallel to one another.

 

 

cool cool cool

CPhill  Nov 2, 2017

17 Online Users

avatar

New Privacy Policy

We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive information about your use of our website.
For more information: our cookie policy and privacy policy.