Posted by hello on Monday, November 5, 2007 at 10:41pm.
given: segment AB is paralell to segment DC; segment AB is congruent to segment to DC
prove: triangle ABC is congruent to triangle CDA
statements:
1. segment AB is congruent to segment DC
2.segment AC is congruent to segment AC
3.segment AB is paralell to segment DC
4.angle BAC is congruent to angle DCA
5.triangle ABC is congruent to triangle CDA
(i need to find the reasons)???
reasons:
1.?
2.?
3.?
4.?
5.?

geometry  drwls, Tuesday, November 6, 2007 at 8:01am
It is hard to provide geometry assistance without a figure to work with. Your problem seems to be representable by a parallelogram ABCD, where AC is a diagonal. The angle BAC is the same as the angle ACD, because they are formed by a line intersecting parallel lines AB and CD. (There is a theroem about that). That means triangles ABC and ACD have two pairs of sides (AB/CD and the common side AC)with an included angle congruent. That makes the triangles congruent. (SideAngleSide theorem).
Answer This Question
Related Questions
 Geometry  Yes, I'm this desperate. I just have problems with coming up with the...
 Geometry  Given: A(3,1), B(5,2), C(2,0), P(3,4), Q(5,3), R(6,2). Prove: ...
 geometry  given: segment HI congruent to segment GJ, segment HI parallel to ...
 Geometry  Given: A(3,1), B(5,2), C(2,0), P(3,4), Q(5,3), R(6,2). Prove: ...
 Geometry  Given: A(3,1), B(5,2), C(2,0), P(3,4), Q(5,3), R(6,2). Prove: ...
 geometry  I need to figure out this proof, the figure is two triangles forming ...
 Geometry..  Given: A(3,1), B(5,2), C(2,0), P(3,4), Q(5,3), R(6,2). Prove...
 Math  Given: Segment AB is congruent to Segment DE Prove: Segment AD is ...
 Geometry  Given: segment AB is congruent to segment BC; angle 1 is congruent to...
 Geometryproperties of tangents of a circle  Circle L has segment LJ and ...
More Related Questions