Triangle

A triangle is a polygon with three edges and three vertices. It is one of the basic shapes in geometry. A triangle with vertices A, B, and C is denoted .

In Euclidean geometry any three points, when non-collinear, determine a unique triangle and a unique plane (i.e. a two-dimensional Euclidean space). This article is about triangles in Euclidean geometry except where otherwise noted.

Types of triangle

By lengths of sides

Triangles can be classified according to the lengths of their sides:

Sand

Sand is a naturally occurring granular material composed of finely divided rock and mineral particles. It is defined by size, being finer than gravel and coarser than silt. Sand can also refer to a textural class of soil or soil type; i.e. a soil containing more than 85% sand-sized particles (by mass).

The composition of sand varies, depending on the local rock sources and conditions, but the most common constituent of sand in inland continental settings and non-tropical coastal settings is silica (silicon dioxide, or SiO₂), usually in the form of quartz. The second most common type of sand is calcium carbonate, for example aragonite, which has mostly been created, over the past half billion years, by various forms of life, like coral and shellfish. It is, for example, the primary form of sand apparent in areas where reefs have dominated the ecosystem for millions of years like the Caribbean.

Composition

In terms of particle size as used by geologists, sand particles range in diameter from 0.0625 mm (or ¹⁄₁₆ mm) to 2 mm. An individual particle in this range size is termed a sand grain. Sand grains are between gravel (with particles ranging from 2 mm up to 64 mm) and silt (particles smaller than 0.0625 mm down to 0.004 mm). The size specification between sand and gravel has remained constant for more than a century, but particle diameters as small as 0.02 mm were considered sand under the Albert Atterberg standard in use during the early 20th century. A 1953 engineering standard published by the American Association of State Highway and Transportation Officials set the minimum sand size at 0.074 mm. A 1938 specification of the United States Department of Agriculture was 0.05 mm. Sand feels gritty when rubbed between the fingers (silt, by comparison, feels like flour).

Mega Man Zero

The Mega Man Zero series, known as Rockman Zero (ロックマンゼロ, Rokkuman Zero) in Japan, is the series succeeding the Mega Man X story-line, and a series in Capcom's Mega Man video game franchise, co-produced by Keiji Inafune, and directed by Mega Man Legends series director Yoshinori Kawano. Consisting of four games developed for the Game Boy Advance by Inti Creates, the series began with the release of Mega Man Zero in 2002. The story follows Zero who is awakened by Ciel from a century-long hibernation to face his former friend Mega Man X, who has begun a genocide on the Reploids. The games follow from the ending of Mega Man X 5, which was intended as the conclusion of that series by Inafune; the further sequels X 6-8 are ignored as they were produced by another unit at Capcom.

Gameplay

Like the Mega Man X series, the Mega Man Zero series is a two-dimensional platform game with run and gun elements that places a heavy emphasis on memorizing boss patterns and selecting the correct weapons to use against enemies. Unlike previous series, the stages of Mega Man Zero are inside of areas that are part of a larger map, and the player could freely explore these areas once the respective mission(s) in each area is completed. However, Mega Man Zero 2 and later entries removed this and returned to the standard format that allowed the player to select a mission from a stage select screen.

Mega Man

Mega Man, alternatively written as Megaman and MegaMan, known as Rockman (ロックマン, Rokkuman) in Japan, is a video game franchise created by Capcom, starring the robot character Mega Man, or one of his many counterparts. Mega Man, released for the Nintendo Entertainment System in 1987, began a series of over 50 games on multiple systems. By March 2015, the series had sold approximately thirty million copies worldwide, and is often cited as one of the most renowned video game franchises of all time.

Overview

The classic Mega Man series consists of ten main titles including the original game, as well as all Game Boy and PC titles featuring the original design of Mega Man. The classic series is considered to be the origin of the story, with Mega Man being the first installment, and continuing with ten direct sequels. Chronologically after Mega Man 8 comes Mega Man & Bass, followed by Mega Man 9 and Mega Man 10.

Although the classic series has yet to reach an ending, the storyline shifts to the Mega Man X series, followed by the Mega Man Zero series, Mega Man ZX and Mega Man Legends. Although it is confirmed that the Legends series takes place sometime in the distant future after the ZX series, there is an uncertain amount of time as to when it actually takes place. All series follow one continuous timeline except for Mega Man Battle Network and Mega Man Star Force which exist in an alternate universe (one in which network technology flourished instead of robotics technology), with Star Force occurring two centuries after the Battle Network series.

Mega Man Zero 3

Mega Man Zero 3, known in Japan as Rockman Zero 3 (ロックマンゼロ3,, Rokkuman Zero Surī), is a video game developed by Inti Creates and published by Capcom for the Game Boy Advance (GBA) handheld game console. It is the third video game in the Mega Man Zero series of Mega Man video games.

Gameplay

This game follows almost exactly the same rules as its predecessor, Mega Man Zero 2. Once again, Zero has his Z-Saber, Buster, and Shield Boomerang. However, Zero's rod weapon (originally the Triple Rod in Mega Man Zero and the Chain Rod in Mega Man Zero 2) has been replaced with the Recoil Rod: a pair of tonfa-like weapons that can be aimed in all directions. When charged up, a powerful stabbing attack is performed, which can knock enemies back, or propel Zero into the air if aimed down to the ground, like a makeshift pogo stick.

The Cyber Elf system has been given an overhaul with the introduction of Satellite Cyber Elves. These are different from the standard Cyber Elves, which have been renamed "Fusion Elves", in that they are equipped for a constant benefit, and the use of them will not affect the mission ranking score. However, only two Satellite Elves can be equipped at once.