Use the Triangle object tool to draw a triangle or equilateral triangle. The vertices are located at the three corners of the triangle.
To draw a triangle:
The triangle is drawn on the image.
Drawing an Equilateral Triangle
An equilateral triangle has three sides of equal length. To draw an equilateral triangle, repeat the procedure for drawing a triangle and press P while drawing the base of the triangle. This also establishes the height of the triangle. Release the cursor to anchor the second and third vertices on the image.