Theta Greek Letter Circle black outline icon
Greek letter theta, an oval with a horizontal bar, inside a circle outline
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About the Theta Greek Letter Circle black outline icon
A tall narrow oval crossed by a single horizontal bar forms the Greek capital theta, centered inside a clean circular badge. The letter stands for angles in trigonometry, temperature and phase in physics, and a parameter in statistics, making it useful for math and engineering courseware, scientific calculators, equation editors, lab report templates, and fraternity or classical-themed branding.
The concentric composition contrasts the wide outer ring with the slimmer inner oval, and the crossbar sits exactly on the vertical midpoint for balance. It belongs with alpha, beta, pi, sigma and omega icons in the Greek alphabet set. Because the crossbar is thin, avoid using it below 24 px.
This is the black outline version of the theta greek letter circle icon: even, monoline strokes that stay crisp at small sizes and suit clean, minimal interfaces, wireframes and light backgrounds.
It downloads free as an SVG vector or transparent PNG in seven sizes, and the free online editor lets you recolor it, apply gold, silver, neon and gradient styles, add animation, or convert it to EPS, PDF and DXF.
Free for personal and commercial use with attribution.
