---
title: "Unknown 2 Icon | Free Download PNG & SVG | Rounded Line - Material Symbols"
product: "Streamline Icons, Illustrations and Elements"
url: /icons/download/unknown-2--29951
canonical_url: "https://www.streamlinehq.com/icons/download/unknown-2--29951"
summary: "Rounded line icon of a split circle with plus upper left and minus lower right. Used for add-remove controls."
---

# Unknown 2 icon

The Unknown 2 icon shows a circular emblem divided by a diagonal line, with a plus in the upper left and a minus in the lower right. Drawn in the line style on a 24px grid for clean, spacious UI rendering. Use it for add/remove controls, comparison interfaces, adjustment tools, and quantity settings. It belongs to Rounded Line - Material Symbols free set in the Google Material family.

## Preview

![Rounded line icon of a split circle with plus upper left and minus lower right. Used for add-remove controls.](https://assets.streamlinehq.com/image/private/w_300,h_300,ar_1/f_auto/v1/icons/photo-image/unknown-2-v1rtgt8ehjwaa9ohl8b5.png/unknown-2-k8jwhlwf28f9qrik4j4aha.png?_a=DATAiZkSZAA0)

## Details

- **Name**: Unknown 2
- **Type**: Icon
- **Set**: [Rounded Line - Material Symbols](/icons/material-symbols-rounded-line.md) — Material Symbols by Google - free customizable icon set with icons in outlined, rounded, and sharp variants.
- **Family**: [Google Material](/icons/material-symbols.md)
- **Style**: Line, Outlined, Geometric
- **Category**: Photo Image › Photo Image
- **Default size**: 24px
- **Pricing**: Free
- **License**: [Apache](https://www.apache.org/licenses/LICENSE-2.0.txt)
- **Author**: [Google](https://fonts.google.com/icons)
- **Formats**: PNG, WEBP, PDF, SVG, JSX
- **Tags**: plus, minus, duality, balance, polarity, contrast, brightness, light, dark, opposite, control, settings, adjustment, toggle, interface, display, positive, negative, unknown

## Download

- [Download Unknown 2 on Streamline](https://www.streamlinehq.com/icons/download/unknown-2--29951)

## Also available in other styles

- [Unknown 2 — Sharp Line - Material Symbols](/icons/download/unknown-2--29909.md) (Free)
- [Unknown 2 — Outlined Line - Material Symbols](/icons/download/unknown-2--30001.md) (Free)

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