1. ## Geometry only

Using only basic geometry (no trig), find the value of angle x.

Good luck,
Maud

triangle.png

2. Wow! Was that a guess or did you have a working proof? Either way, it was not the correct answer. Sorry!

3. I spent a fair amount of time working it out.
It required constructing a parallelogram that incorporated the original triangle, parallel to the base and one side...
I didn't do it the way you illustrated.

I'll have to recheck my work (pretty scribbled at this point) and see what I did wrong.

4. I drew the attachment.

I found x = 30.

Then, rethinking I found a conflict that x could also be 20.

I can't see where I boofed.

5. triangle5.png

Interesting approach but it seems like the parallelogram didn't buy you much information. Wondering if you created the parallelogram at point D instead, you could have found the angles needed to solve for x? Valiant effort" Worked on this for 3 days. I wasn't sure if I was correct until I added up the angles as a check.

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