box(-.7,-.7,5.8,4.8,.6)
A = point(0,0); B = point(5,4); C = point(5,0);

draw(A,B,C);

draw("A",A,.15,205:)
draw("B",B,.15,45:)
draw("C",C,.15,-30:)

mark(B,C,A,right)

draw("$b$",segment(A,C),.2,270:)
draw("$a$",segment(B,C),.2,0:)
draw("$c$",segment(A,B),.3,135:)

Instructions

Create EPS

$ euk2eps Rtriangle.euk

Outline fonts

$ eps2eps -dNOCACHE Rtriangle.eps Rtriangle2.eps

Fix bounding box

$ ps2epsi Rtriangle2.eps Rtriangle.eps

Convert to Sketch

$ pstoedit -f sk Rtriangle.eps Rtriangle.sk

Convert to SVG

$ skconvert Rtriangle.sk Rtriangle.svg

(Use Inkscape to touch-up SVG file)