triangle

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Related to isosceles triangle: equilateral triangle

triangle

 [tri´ang-g'l]
a three-cornered object, figure, or area, such as a delineated area on the surface of the body; called also trigone.
carotid triangle, inferior that between the median line of the neck in front, the sternocleidomastoid muscle, and the anterior belly of the omohyoid muscle.
carotid triangle, superior carotid trigone.
cephalic triangle one on the anteroposterior plane of the skull, between lines from the occiput to the forehead and to the chin, and from the chin to the forehead.
digastric triangle submandibular triangle.
Einthoven's triangle an imaginary equilateral triangle with the heart at its center, formed by the axes of the three bipolar limb leads.
Einthoven's triangle. Bipolar limb leads I, II, and III form Einthoven's triangle. Other standard positions for electrocardiographic leads are the augmented unipolar leads: aVR (right arm), aVL (left arm), and aVF (left leg). From Polaski and Tatro, 1996.
triangle of elbow a triangular area on the front of the elbow, bounded by the brachioradial muscle on the outside and the round pronator muscle inside, with the base toward the humerus.
triangle of election superior carotid triangle.
facial triangle a triangular area whose points are the basion and the alveolar and nasal points.
femoral triangle the area formed superiorly by the inguinal ligament, laterally by the sartorius muscle, and medially by the adductor longus muscle; called also Scarpa's triangle.
infraclavicular triangle that formed by the clavicle above, the upper border of the greater pectoral muscle on the inside, and the anterior border of the deltoid muscle on the outside.
inguinal triangle the triangular area bounded by the inner edge of the sartorius muscle, the inguinal ligament, and the outer edge of the long adductor muscle.
lumbocostoabdominal triangle that lying between the external oblique muscle of the abdomen, the posterior inferior serratus muscle, the erector muscle of the spine, and the internal oblique muscle of the abdomen.
occipital triangle the area bounded by the sternocleidomastoid muscle in front, the trapezius muscle behind, and the omohyoid muscle below.
Scarpa's triangle femoral triangle.
subclavian triangle a triangular area bounded by the clavicle, the sternocleidomastoid muscle, and the omohyoid muscle.
suboccipital triangle that lying between the posterior greater rectus muscle of the head and the superior and inferior oblique muscles of the head.

tri·an·gle

(trī'ang-gĕl), [TA]
In anatomy and surgery, a three-sided area with arbitrary or natural boundaries.
See also: trigonum, region.
[L. triangulum, fr. tri-, three, + angulus, angle]

tri·an·gle

(trī'ang-gĕl) [TA]
anatomy, surgery A three-sided area with arbitrary or natural boundaries.
See also: trigonum, region
[L. triangulum, fr. tri-, three, + angulus, angle]

tri·an·gle

(trī'ang-gĕl) [TA]
In anatomy and surgery, three-sided area with arbitrary or natural boundaries.
[L. triangulum, fr. tri-, three, + angulus, angle]
References in periodicals archive ?
if h [greater than or equal to] [u.sub.*] + [u.sup.0.sub.-], the solution depends on [h.sub.-] can be a union of two isosceles triangles with a common base with heights [h.sub.+] and [h.sub.-] or the union of two isosceles triangles and a trapezium;
A standard spidron consists of two alternating, adjoining sequences of equilateral and isosceles triangles. Start with an equilateral triangle.
Maslow uses an isosceles triangle to diagram his construct that true learning cannot occur if the student's basic biological and psychological needs have not been met.
We presented isosceles triangles on a table and required 12 observers to observe them with a plane or convex mirror.
In an isosceles triangle ABC (where C is any point on bisector n),
They may also believe that if an isosceles triangle (with exactly two equal angles and two equal sides) is "tipped on its side," it is no longer a triangle; or they may believe that a scalene triangle (with three different angles and three different side lengths) is not a triangle because "it doesn't look right." Their understanding of geometry is based on physical appearance--what a triangle "looks like."
From the relationship tan[theta] = [C.sub.0]/2h, and recognizing that the hypotenuse of that right triangle is the base of an isosceles triangle, the sides of that triangle, which are equal in length to the radius of the circle, can be computed.
3 isosceles triangle shaped polished mirrors with 9-inch sides and a 4-inch base, with a 1/4-inch hole drilled 1 inch from the top and centered on the 4-inch base
Preferred seat: "At the upper point of an isosceles triangle whose base is the width of the screen."
The area (A) is equal to the area of the sector bounded by radii OP and OQ minus the area of the isosceles triangle POQ.
As novelist and preacher Frederick Buechner notes, "Theorizing about God this way is like an isosceles triangle trying to theorize the Great Pyramid of Cheops into the two dimensions of the printed page."
"Mother Goose & Grimm" creator and Dayton (Ohio) Daily News editorial cartoonist Mike Peters of Tribune Media Services riffed on the circular shape of Keane's panel by displaying drawings such as "The Family Parallelogram" and "The Family Isosceles Triangle."