Right angle
In geometry and trigonometry, a right angle is an angle that bisects the angle formed by two adjacent parts of a straight line. More precisely, if a ray is placed so that its endpoint is on a line and the adjacent angles are equal, then they are right angles. As a rotation, a right angle corresponds to a quarter turn (that is, a quarter of a full circle).
Closely related and important geometrical concepts are perpendicular lines, meaning lines that form right angles at their point of intersection, and orthogonality, which is the property of forming right angles, usually applied to vectors. The presence of a right angle in a triangle is the defining factor for right triangles, making the right angle basic to trigonometry.
The term is a calque of Latin angulus rectus; here rectus means "upright", referring to the vertical perpendicular to a horizontal base line.
Symbols
In Unicode, the symbol for a right angle is U+221F ∟ RIGHT ANGLE (HTML ∟).
In diagrams the fact that an angle is a right angle is usually expressed by adding a small right angle that forms a square with the angle in the diagram, as seen in the diagram of a right triangle (in British English, a right-angled triangle) to the right. The symbol for a measured angle, an arc with a dot, is used in some European countries, including German-speaking countries and Poland, as an alternative symbol for a right angle.
Right angle (disambiguation)
A right angle is an angle that bisects the angle formed by two halves of a straight line.
Right angle or Rightangle may also refer to:
Quad (film)
Quad (also known as Cripple) is a 2013 drama film starring Aaron Paul, Jeff Daniels and Tom Berenger. Filming took place in Michigan.
Plot
A hard-living salesman becomes a quadriplegic after an accident.
Cast
External links
Right Angle Sports
Right Angle Sports is a public American tipster that advises sports bettors on which teams to bet on. A sports information service makes predictions on the outcome of a sporting event by predicting the relationship of the true probabilities to the payout odds and recommends to their clients which games to then place a bet on.
American college football and basketball
Commonly known as "RAS" in the sports betting industry, Right Angle Sports specializes in handicapping college football (refers to American football played by American collegiate athletes) and college basketball (refers to basketball played by American collegiate athletes). RAS makes predictions on both sides (known as betting against the spread where one team must not necessarily win the game, but cover the point spread to win your bet) and totals where two teams' combined points must finish over or under a given number.
RAS initially gained notoriety for their success in the college football and college basketballtotals markets and has since proven successful with sides. Due to their success and large following, their predictions have substantial influence on the various sports markets they participate in. When RAS releases a pick to subscribers, line movement can instantly be seen at major online sportsbooks or live odds services.
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