Title: Tripoint
Content: the Treriksröset of Finland, Norway, and Sweden (the northernmost international tripoint in the world; the exact point is in a lake, but a marker is built on that point) ; the Vaalserberg of the Netherlands, Germany, and Belgium ; the "Dreiländereck" of Germany, France, and Switzerland (the exact point is in the river and the marker is not on the exact point) ; the Schengen tripoint of Germany, France, and Luxembourg (where the Schengen Agreement was signed on board a boat, since the tripoint is in the river) ; the summit of Sia Kangri (near Indira Col) is the tripoint where territories administered by India, Pakistan, 
Title: Triangulation station
Content:  In the United Kingdom, trig points are typically concrete pillars and were erected by the Ordnance Survey. The process of placing trig points on top of prominent hills and mountains began in 1935 to assist in the accurate retriangulation of Great Britain. The Ordnance Survey's first trig point was erected on 18 April 1936 near Cold Ashby, Northamptonshire. In low-lying or flat areas some trig points are only a few metres above sea level and one is even at −1 m (near Little Ouse, Cambridgeshire, TL61718 89787). When all the trig points were in place, it was possible in clear weather to see at least two other trig points from any one trig point, but subsequent vegetation growth means that this is not necessarily 
Title: Tripoint
Content:  A tripoint, trijunction, triple point, or tri-border area is a geographical point at which the boundaries of three countries or subnational entities meet. There are approximately 176 international tripoints. Nearly half are situated in rivers, lakes or seas. On dry land, the exact tripoints may be indicated by markers or pillars, and occasionally by larger monuments. Usually, the more neighbours a country has, the more international tripoints that country has. China with 16 tripoints and Russia with 11 to 14 lead the list of states by number of tripoints. Within Europe, landlocked Austria has nine tripoints, among them two with Switzerland and Liechtenstein. Island countries such as Japan have no country tripoints (some, like Bahrain and Singapore, have tripoints in the territorial waters), and the same goes for states with only 
Title: Benchmarking (hobby)
Content:   UK benchmarks tend to be on the corners of pubs, churches, and other public buildings, as well as farm buildings, railway bridges, and private houses especially those near a road junction. However, any building may be used, as well as natural features such as a rock outcrop. In the United Kingdom, trigpointing is a recreational activity similar to benchmarking. Searching for trig points is more popular than hunting benchmarks in the UK, but there is a considerable overlap in participation. "Trig points" is the common name for "triangulation pillars". These are concrete pillars, about 4 feet tall, which were used by the Ordnance Survey in order to determine the exact shape of the country in a project known as the retriangulation of 
Title: Triangulation
Content:  In trigonometry and geometry, triangulation is the process of determining the location of a point by forming triangles to the point from known points.
Title: Catch points
Content:    Trap points are found at the exit from a siding or where a secondary track joins a main line. A facing turnout is used to prevent any unauthorised movement that may otherwise obstruct the main line. The trap points also prevent any damage that may be done by a vehicle passing over points not set for traffic joining the main line. In the United Kingdom, the use of trap points at siding exits is required by government legislation. An unauthorised movement may be due to a runaway wagon, or may be a train passing a signal at danger. When a signal controlling passage onto a main line is set to "danger", the trap points are set to derail any vehicle 
Title: Triangle Point
Content:  The point is located at -62.52194°N, -59.84417°W which is 2.9 km west by north of Spit Point (the north extremity of Provadiya Hook and an entrance point to Yankee Harbour), 7.44 km northwest of Ephraim Bluff, 7.32 km north-northeast of Half Moon Island, 8.27 km east of Inott Point, Livingston Island and 1.4 km southeast of Kaspichan Point. British mapping in 1935 and 1968, Argentine in 1948, Chilean in 1974, and Bulgarian in 2005 and 2009.
Title: Tripoint
Content:  China meet. ; the Triple Frontier of Argentina, Brazil, and Paraguay ; the Tres Fronteras of Brazil, Peru, and Colombia ; the Mont Dolent of Italy, France, and Switzerland (the exact point is not at the peak but around 200 m to the northwest) ; the Trójstyk of Poland, Czech Republic and Slovakia ; Mount Roraima, where Venezuela, Brazil, and Guyana all meet ; Jongsong Peak, the eastern tripoint of China, India and Nepal ; Bratislava is the only capital city in the world which is located at a tripoint: Slovakia, Hungary, and Austria. The city's administrative area extends to the tripoint, but the point lies 
Title: List of tripoints of English counties
Content:  This article contains a list of tripoints of English counties. A tripoint is the point at which three geographical regions meet.
Title: Triangulation station
Content:  near construction sites for monitoring the precision and progress of construction. Some trigonometrical stations use the Global Positioning System for convenience; however, the accuracy depends on factors such as ionospheric and tropospheric propagation delay errors. Although stations are no longer required for many surveying purposes, they remain useful to hikers as navigational aids. Trig points or Triangulation Pillars are another way of spotting the top of a mountain on a map. The symbol for a trig point is a small triangle. They are real concrete pillars that are placed at particular places which are usually the tops of hills or mountains.

Question: where are trigger points located in the body?
Answer: muscles.