---
id: geo-pri
title: "Geometry Primitives"
author: Benjamin Qi
description: Basic setup for geometry problems.
---

import { Problem } from "../models";

export const metadata = {
  problems: {
    standard: [
      new Problem("YS", "Sort Points by Argument", "sort_points_by_argument", "Intro", false, [], ""),
      new Problem("Kattis", "Segment Intersection", "segmentintersection", "Intro", false, [], ""),
      new Problem("Kattis", "Segment Distance", "segmentdistance", "Intro", false, [], ""),
      new Problem("Kattis", "Point in Polygon", "pointinpolygon", "Intro", false, [], ""),
      new Problem("Kattis", "Polygon Area", "polygonarea", "Intro", false, [], ""),
    ],
    other: [
      new Problem("CF", "Arpa & Geo", "problemset/problem/851/B", "Intro", false, [], ""),
      new Problem("CF", "Tell Your World", "problemset/problem/849/B", "Intro", false, [], ""),
      new Problem("CF", "Gleb & Pizza", "problemset/problem/842/B", "Intro", false, [], ""),
      new Problem("Kattis", "Max Collinear", "maxcolinear", "Easy", false, [], ""),
      new Problem("Kattis", "Birthday Cake", "birthdaycake", "Easy", false, [], ""),
    ]
  }
};

## Primitives

You should know basic operations like cross product and dot product. 

### Tutorial

<resources>
  <resource source="CF" title="C++ - std::complex" url="blog/entry/22175" starred>short description of operations</resource>
  <resource source="CPH" title="29 - Geometry" starred>Complex #s, Points & Lines, Polygons, Distances</resource>
  <resource source="CF" title="Point Struct" url="blog/entry/48122" starred>code, examples</resource>
  <resource source="cp-algo" title="Geometry - Elementary Operations" url="https://cp-algorithms.com/" starred></resource>
  <resource source="CPC" title="12 - geometry" url="12_geometry" starred>basics, polygon area, point in polygon</resource>
  <resource source="CF" title="vlecomte - Geometry Handbook" url="blog/entry/59129" starred>some material is quite advanced</resource>
  <resource source="TC" title="Basic Geometry Concepts Pts 1,2" url="geometry-concepts-basic-concepts">broken code format</resource>
</resources>

 - [My Templates](https://github.com/bqi343/USACO/tree/master/Implementations/content/geometry%20(13)/Primitives)

### Standard Problems

<resources>
  <resource source="IUSACO" title="14.2 - Segment Intersection"></resource>
</resources>

<problems-list problems={metadata.problems.standard} />

### Misc Problems

<problems-list problems={metadata.problems.other} />

   - [Racing Off Track](https://open.kattis.com/contests/acpc17open/problems/racingofftrack) (link doesn't work ...)
   - [TopCoder Watchtower](https://community.topcoder.com/stat?c=problem_statement&pm=2014&rd=4685)