triangle
Longman Dictionary of Contemporary English 5++LDOCE 5++ldoce_341_dtri·an·gle /ˈtraɪæŋɡəl/ ●●● noun [countable] 1. 
HMa flat shape with three straight sides and three angles 三角形2 CFsomething that is shaped like a triangle 三角形物体 a triangle of land 一块三角地3. APMa musical instrument made of metal bent into the shape of a triangle. You hit it with a metal stick to make a ringing sound. 三角铁〔一种打击乐器〕4. American EnglishHM a flat plastic object with three sides that has one angle of 90° and is used for drawing angles 三角板，三角尺 SYN British English set-square
HMa flat shape with three straight sides and three angles 三角形2 CFsomething that is shaped like a triangle 三角形物体 a triangle of land 一块三角地3. APMa musical instrument made of metal bent into the shape of a triangle. You hit it with a metal stick to make a ringing sound. 三角铁〔一种打击乐器〕4. American EnglishHM a flat plastic object with three sides that has one angle of 90° and is used for drawing angles 三角板，三角尺 SYN British English set-squareExamples from the Corpus
triangle• They represent a triangle of forces, in which the movement of any one point affects the other two.• The Sander Parallelogram distorts the apparent dimensions of an isosceles right angled triangle.• Second, the welfare cost of monopoly is greater than the deadweight burden triangle itself.• He studied the dark triangle between her legs.• Alpha, or Hamal, forms a large triangle with Beta and Gamma Andromedæ.• We had to make chains of triangles which would be connected to chains in other countries.• A woman sells buttons with pink triangles.• Kubota claims performance ratings of between 200,000 and 1.2m shaded triangles per second and 350,000 to 2m three-dimensional vectors per second.• His nose was a small triangle on his wide face.Origin triangle (1300-1400) Latin triangulum, from tri- ( → TRI-) + angulus “angle”tri·an·gle nounChineseSyllable
with shape Corpus a three sides flat straight
See ldoce4298jpg for more
triangle
tri‧an‧gle /ˈtraɪæŋɡəl/
noun [countable]
1. a flat shape with three straight sides and three angles
2. something that is shaped like a triangle:
a triangle of land
3. a musical instrument made of metal bent into the shape of a triangle. You hit it with a metal stick to make a ringing sound.
4. American English a flat plastic object with three sides that has one angle of 90° and is used for drawing angles
SYN set-square British English
■ types of shapes
▪square a shape with four straight sides that are equal in length and four angles of 90 degrees
▪circle a round shape that is like an O
▪semicircle half a circle
▪triangle a shape with three straight sides and three angles
▪rectangle a shape with four straight sides and four angles of 90 degrees
▪oval a shape like a circle, but that is longer than it is wide
▪cylinder an object in the shape of a tube
▪cube a solid object with six equal square sides
▪pyramid a shape with a square base and four triangular sides that meet in a point at the top
▪sphere a shape like a ball
tri‧an‧gle /ˈtraɪæŋɡəl/
noun [countable]1. a flat shape with three straight sides and three angles
2. something that is shaped like a triangle:
3. a musical instrument made of metal bent into the shape of a triangle. You hit it with a metal stick to make a ringing sound.
4. American English a flat plastic object with three sides that has one angle of 90° and is used for drawing angles
SYN set-square British English
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