Posted by Jane on Thursday, August 26, 2010 at 5:59pm.
An equilateral triangle is one in with all three sides are length. If two vertices of an equilateral trangle (0,4) and (0,0), find the third vertex. How mant of these triangles are possible?
How would you slove this??

Math  drwls, Thursday, August 26, 2010 at 6:27pm
Thre are two possible solutions, with the third vertex to the right or left of the y axis. The side length is obviously 4 and the base is along the y axis.
The y value of the third vertex is +2 .
For the x value,
x^2 + 2^2 = 4^2 (The square of the length of a side)
x = + or  sqrt 12

Math  Anonymous, Thursday, August 26, 2010 at 10:53pm
Okay I get everything but the
For the x value,
x^2 + 2^2 = 4^2 (The square of the length of a side)
x = + or  sqrt 12
How did you get that and why??
Answer This Question
Related Questions
 Calc HELP!  an equilateral triangle is one in with all three sides are length. ...
 geometry  Rewrite the statement in ifthen form. All equilateral triangles have...
 Math  A pentagon is formed by putting together three identical equilateral ...
 Algebra 2  Type the correct answer in the box. Use numerals instead of words. ...
 Chemistry  General Chemistry 111 11/28/11 Chapter 9 Extra Credit Quiz Name: ...
 Math  An equilateral triangle s divided into 4 congruent equilateral triangles...
 math  if two vertices of equilateral triangle is (0,0) (3,3^1/2)find the third ...
 geometry  f equilateral triangle JKL is cut by three lines as shown above to ...
 math  The perimeter of a square piece of land is twice the perimeter of an ...
 Algebra  The perimeter of an equilateral triangle is 7 in. more than the ...
More Related Questions