Please choose the correct ending to complete the given sentence: Education and Communications: [header] How to find the center of a circle [title] Draw a circle. [step] Use a compass, or trace any circular object. The size of the circle does not matter.

Ending1: [title] Remove a block of wood of the same height as the circle. [step] If the circle is too large to draw straight side up, use a box cutter to remove a block of wood. Ending2: [substeps] Before you begin drawing your circle, have it centered so that it appears smaller than it actually is. [title] Place the compass needle at the center of the circle. Ending3: That is, you can trace the circle using one " line " or, if you're left-handed, use two " lines " to trace and freehand your circle. [substeps] To obtain the center of a circle, draw a circle with sides of 1 ". Ending4: If you're finding the center of an existing circle, then you don't need to draw a new circle. [substeps] A geometry compass is a tool specifically designed to draw and measure circles.

Answer format: ending1/ending2/ending3/ending4