Solid triangular section (equilaterial)
<img src="https://eng-calculations.com/SVG/Roark(and39)s_formulas_for_Stress_and_Strain/Formulas_for_torsional_deformation_and_stress_(TABLE_10(and46)1)/Solid triangular section (equilaterial).svg" alt="Solid_triangular_section_(equilaterial)" title="Solid_triangular_section_(equilaterial)">
https://eng-calculations.com/SVG/Roark(and39)s_formulas_for_Stress_and_Strain/Formulas_for_torsional_deformation_and_stress_(TABLE_10(and46)1)/Solid triangular section (equilaterial).svg