Triangle Circumcenter
Step 1: Using a ruler or straight edge, create a triangle and name it triangle ABC
Step 2: Using your compass, using point A as your center of your circle, create a circle that goes through line AB and line AC ( don't change your compass).
Step 3: Using that same compass measurement, start at point B and draw a circle.
Step 4: Where circle A and circle B intersect, name those two point D and E
Step 5: Using a straight edge or ruler, draw a line from point D to point E
Step 6: Using your compass tool, draw a circle with the center being point C ( don't change your compass)
Step 7: Using the same compass measurements, start at point B and draw a circle
Step 8: Where circle C and circle B intersect, name those two points F and H
Step 9: Using a straight edge or ruler, draw a line from point F to point H
Step 10: Where line FH and line DE intersect, call that point I
Point I is your circumcenter of your triangle