Triangle RTF is similar to triangle RXY. Be able to explain the importance of the following in determining the similarity: Parallel lines and transversals
Corresponding angles
Angle-Angle Criterion

    choose the correct definition for  extremo.  a.  end      b.  extra      c.  extract      d.  eventual 

*let m∠cob = 50°30’, m∠aob = 70° and m∠aoc = 20°30’. could point c be in the interior of ∠aob? why? a. point c could be the interior of aob but it is not the only case b. point c is the interior of aob c. point c is not the interior of aob d. the given is not possible for the plane geometry answer

The coordinates of vortex a’ are (8,4) (-4,2) (4,-,4) the coordinates of vortex b’ are (6,6)(12,-,12)(12,12) the coordinates of vortex c’ are(-2,,12)(4,12)(12,-4)