right angle

(redirected from Ninety degrees)
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right angle

the angle between two radii of a circle that cut off on the circumference an arc equal in length to one quarter of the circumference; an angle of 90? or π/2 radians

right angle

[′rīt ′aŋ·gəl]
(mathematics)
An angle of 90°.

right angle

An angle of 90°.
References in periodicals archive ?
The monument's distinctive torque, as its vaulted center section fans out horizontally toward the ground, is recreated by simply rotating one end of a horizontal rectangular field of hundreds of parallel blue threads by ninety degrees, creating a curved surface anchored to the wall in a vertical line on one side, and to the floor, in a row aligned with the wall's surface, in front of it on the other.
When at rest the firing pin should be seen about a tenth of an inch in the firing pin tunnel and should not clear the bolt face without ninety degrees of rotation.
He said: "There is simply no prospect of the Court of Appeal reversing the judgment." Mr Martin had been riding in the back of the cart with his wife in Sacriston, at about 6.30pm on September 15, 2004, when the horse turned ninety degrees off Woodside, as it passed near to the bus..
In preparation for the surgery the patient was placed in a supine position with both arms on arm boards extended less than ninety degrees. Anesthesia was begun at 10:39 a.m., surgery started at 11:38 a.m., the procedure ended at 5:11 p.m., and anesthesia ended at 5:47 p.m.
The "Note" offers a few descriptive comments concerning the original hand-written manuscript of Il mondo, specifying the author's use of "colored pens and markers" and her playful mixing of traditionally constructed texts with drawings done by hand and "experimental typography" which includes the use of onomatopoeic terms as well as an entire section printed vertically, so that readers must turn the book by ninety degrees and follow the text as it unfolds from the left to the right side; or rather, parallelly to its spine (9).
pencil's length and thumb and forefinger stretched ninety degrees.
The Arms Park has now been rebuilt and rotated through ninety degrees, and looks like a cruise liner beached in the middle of Cardiff.
The breech plug has an interrupted-thread design that allows easy removal simply by rotating it ninety degrees. No more threading the breech plug in and out, a chore often made difficult by fouling and corrosion.
Eriksson was also pleased with the team's fitness levels in heat hovering around the ninety degrees mark and especially with I the fact Wayne Rooney lasted 90 minutes as the lone striker.
and turn your left toot in 75 degrees and your right foot and leg out ninety degrees.
While some of these problems are minor, turnout is a particular problem in ballet where the ideal is ninety degrees of external rotation in the hips.