|Tutorial for a 12 inch Equilateral Triangle Block|
|An equilateral triangle quilt, by Constança Cabral via flickr|
|An example of an isosceles triangle quilt by Audrie of Blue is Bleu via flickr|
An isosceles triangle has two sides and two angles that are the same. The third side can be either shorter than the other two (like the quilt above) or wider like a half square triangle. A half square triangle is both a right triangle and an isosceles triangle, for those who want to go the extra geometric mile. Check out this site for more fun triangle facts.
Cut a piece of paper or card stock 3.75 inches tall. The quilt math rule for equilateral triangles is that the unfinished triangle needs to be cut 3/4 inch taller than the desired finished size. Our finished triangles will be 3 inches tall.
Arrange the triangles as desired in four rows of eight triangles.
Sew each row together. Place the first two triangles in the row right sides together and sew down the side with a 1/4 inch seam.
Next open up the triangle and lay the next triangle next to it. Flip the third triangle on top of the other two.
Use a ruler and rotary cutter to cut off the dog ears.
You did it!
How did you like it? Have you made a triangle quilt before?