Draw From Triangle org.inkscape.render.draw_from_triangle false false false false false false false false false false false false false false false false false false false false false cos(a_a):cos(a_b):cos(a_c) false false s_a*s_b*s_c/(4*area) false false This extension draws constructions about a triangle defined by the first 3 nodes of a selected path. You may select one of preset objects or create your own ones. All units are the Inkscape's pixel unit. Angles are all in radians. You can specify a point by trilinear coordinates or by a triangle centre function. Enter as functions of the side length or angles. Trilinear elements should be separated by a colon: ':'. Side lengths are represented as 's_a', 's_b' and 's_c'. Angles corresponding to these are 'a_a', 'a_b', and 'a_c'. You can also use the semi-perimeter and area of the triangle as constants. Write 'area' or 'semiperim' for these. You can use any standard Python math function: ceil(x); fabs(x); floor(x); fmod(x,y); frexp(x); ldexp(x,i); modf(x); exp(x); log(x [, base]); log10(x); pow(x,y); sqrt(x); acos(x); asin(x); atan(x); atan2(y,x); hypot(x,y); cos(x); sin(x); tan(x); degrees(x); radians(x); cosh(x); sinh(x); tanh(x) Also available are the inverse trigonometric functions: sec(x); csc(x); cot(x) You can specify the radius of a circle around a custom point using a formula, which may also contain the side lengths, angles, etc. You can also plot the isogonal and isotomic conjugate of the point. Be aware that this may cause a divide-by-zero error for certain points.

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