Looks like you need their specialty wedge ruler/template for this pattern.

I love to reverse engineer things (nerd that I am). Here's how you can make a template for this pattern.
1) Cut out a 10" x 10" square of paper
2) Draw a line from the top left corner to the lower right corner (This is a red line in the first square in the image.)
3) Fold the paper so that the bottom edge is along the drawn (red) line. The yellow line in the second square is the fold line, and the black arrow shows how you will be moving the corner up to the line.
4) After the fold, your paper should look like the third square; the light green portion is the paper that is now bottom-side-up. Mark where the corner is on the line - this is the black dot in the third square.
5) Unfold the paper, and draw a line from the bottom left corner to your marked dot from step 4. (This line will match the main line of the black arrow in second square.)
6) Repeat steps 3 to 5 with the upper right corner.
7) At this point, your lines should make your square look like the square from the instructions - the fourth square. The two green triangles are your templates. (They should be identical.) The blue is excess fabric that you use to cut out rectangles for the tree trunks. (1.5" x 3.25")

The templates are equivalent to using a 45 degree wedge ruler.

My daughter bought me a Modern Quilting color book and some nice watercolor pens.

i got a serger carrying case so i could take my newest serger to my quilting group. It was a gift to me from me. Yay!!!!

My beleaguered DH procrastinated on gifts until the last minute and ended up with me driving him to do his shopping (we have to travel from our small town). He wanted to go to the quilt store so I dropped him off and when I picked him up he had no package and said "they didn't have what I wanted." He is friends with the sewing machine repairman at fabric store and it was already on our list of stops so I went in with him. I have a new Janome from there and was chatting and looking at extra feet. DH knew a new rotary cutter was on my list so I pointed out a few items for him to choose from and left - come on, there has to be some mystery left. He bought everything I pointed to, but had come away with a $250 gift certificate from the first place so I really raked it in this year.

I got a 6.5" square ruler. :D Small potatoes, I'm sure, for many of you, but I don't have many rulers (3"x18", 6.5"x24", and a 12.5" square). I've been cutting pretty much everything that isn't strips with the 12.5" square for years. Looking forward to having something a bit more manageable for cutting the smaller pieces! :-)

My big Christmas came in July when my Hubby bought me my long arm. I told him that is at least five Christmases and birthdays worth of gifts right there!