feat(icons): add angle-right, angle-acute, and angle-obtuse

[gurtt]

What is the purpose of this pull request?

• [x] New Icon
• [ ] Bug fix
• [ ] New Feature
• [ ] Documentation update
• [ ] Other:

Description

Adds icons to represent right, acute, and obtuse angles.

Note that angle-acute and angle-obtuse are not geometrically perfect but are optically aligned.

Icon use case

• as a mathematical symbol representing angles
• in design tools for alignment

Alternative icon designs

Icon Design Checklist

Concept

• [x] I have provided valid use cases for each icon.
• [x] I have not added any a brand or logo icon.
• [x] I have not used any hate symbols.
• [x] I have not included any religious or political imagery.

Author, credits & license

• [x] The icons are solely my own creation.
• [ ] The icons were originally created in #<issueNumber> by @<githubUser>
• [ ] I've based them on the following Lucide icons:
• [ ] I've based them on the following design:

Naming

• [x] I've read and followed the naming conventions
• [x] I've named icons by what they are rather than their use case.
• [x] I've provided meta JSON files in icons/[iconName].json.

Design

• [x] I've read and followed the icon design guidelines
• [x] I've made sure that the icons look sharp on low DPI displays.
• [x] I've made sure that the icons look consistent with the icon set in size, optical volume and density.
• [x] I've made sure that the icons are visually centered.
• [x] I've correctly optimized all icons to three points of precision.

Before Submitting

• [x] I've read the Contribution Guidelines.
• [x] I've checked if there was an existing PR that solves the same issue.

[github-actions[bot]]

Added or changed icons

Preview cohesion

Preview stroke widths

DPI Preview (24px)

Icon X-rays

Icons as code

Works for: lucide-react, lucide-react-native, lucide-preact, lucide-vue-next

const AngleAcuteIcon = createLucideIcon('AngleAcute', [
  ["path",{"d":"m13.326 5.003-9.152 13.43A1 1 0 0 0 5 19.997h15.003"}],
  ["path",{"d":"M9.403 10.76a8.1 8.1 0 0 1 3.871 6.93c0 .801-.115 1.576-.329 2.307"}]
])

const AngleObtuseIcon = createLucideIcon('AngleObtuse', [
  ["path",{"d":"m3.5 5.5 5.418 13.864a1 1 0 0 0 .931.636H20.5"}],
  ["path",{"d":"M6.193 12.392a8 8 0 0 1 1.789-.2c4.378 0 7.933 3.499 7.933 7.808"}]
])

const AngleRightIcon = createLucideIcon('AngleRight', [
  ["path",{"d":"M4 13.143h5.857a1 1 0 0 1 1 1V20"}],
  ["path",{"d":"M4 4v15a1 1 0 0 0 1 1h15"}]
])

[karsa-mistmere]

All three of these feel a tad too small and some are pretty off centre both vertically and horizontally.

[chessurisme]

add straight-angle, reflex-angle, and full-rotation.

[jguddas]

The right angle one looks good, the other two would be cool if they were symmetricaly mirrorable and the line segments for the arc would be just a singular arc element, right now it's a mix of curves and ars.

[github-actions[bot]]

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