SOLUTION: I was wondering if you could help me prove that Rstq (a rhombus) is a rhombus The given is that rstq is a quadrilateral and that angle srt in congruent to angle str and angle str

Algebra ->  Geometry-proofs -> SOLUTION: I was wondering if you could help me prove that Rstq (a rhombus) is a rhombus The given is that rstq is a quadrilateral and that angle srt in congruent to angle str and angle str       Log On


   



Question 547047: I was wondering if you could help me prove that Rstq (a rhombus) is a rhombus
The given is that rstq is a quadrilateral and that angle srt in congruent to angle str and angle str is congurent to rtq and angle rtq is congurent to trq and the rhombus looks like__s
__________________R/_\T
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____________________q
and could you set it up as a two column proof please?

Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!


I'll give you the strategy and you can set up your own two-column proof.

Angle SRT is given congruent to Angle STR, so go find the converse of the theorem that says the two base angles of an isosceles triangle are equal to be able to say that the two sides opposite the two given congruent angles are congruent. Do the same thing for the lower triangle. Then using Angle-Side-Angle (the side being the segment RT which is congruent to itself by Reflexive Congruence) show that the upper and lower triangles are congruent. Then by CPCTC, all four sides of the quadrilateral are congruent. Therefore, a rhombus. QED.

John

My calculator said it, I believe it, that settles it
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