26.7.3  Right triangles in the plane

See Section 27.6.3 for right triangles in space.

The right_triangle command creates right triangles.

• right_triangle takes three mandatory arguments and one optional argument:
  • A,B, two points.
  • k, a nonzero real number.
  • Optionally var, a variable name.
• right_triangle(A,B,k ⟨,var ⟩) returns and draws the right triangle ABC, with the right angle at A and with length(AC)=|k|·length(AB). If k > 0, then AB to AC is counterclockwise; if k < 0 then AB to AC is clockwise.

  With the argument var, c will be assigned to var.

Examples