It is called the lateen sail.
Collects wind, it is a triangular sail placed at the front of the sailboat.
i know a triangular sail will go the fastest proven from histor and trial
Um.........you just said the answer. its called a sail
Um.........you just said the answer. its called a sail
A jib is a small triangular sail.
Making the sail area smaller is called reefing.
The triangular jib sail on a sailboat acts as a foresail that helps to harness wind power, contributing to the boat's propulsion. It is typically set in front of the mainsail and aids in improving the vessel's overall speed and maneuverability. By channeling the wind, the jib allows the boat to sail more efficiently, especially when tacking or sailing upwind. Additionally, it provides stability to the sailboat by balancing the forces acting on the sails.
mainsail
The wind is what causes a sailboat to sail.
The front sail of a sailboat is called the "jib." It is typically triangular in shape and is set ahead of the main mast, allowing for better maneuverability and efficiency in catching the wind. The jib can be used in conjunction with the mainsail to optimize sailing performance. In larger vessels, there may be additional sails at the front, but the jib is the most common front sail.
a dinghy would be a small (6 to 16 foot) sailboat, these can have almost any sail rig. the type of rig you described is called a sloop. a sloop is a sailboat with a triangular mainsail and a jib (this sail configuration is called a marconi rig, or bermudian rig), and are very common. so a small, one masted vessel with a mainsail and jib would just be called a sloop, or dinghy.
Sailboat is to sail as kite is to fly, just as airplane is to wing and oil tanker is to engine.