triangle
triangle — 名詞
1. A two-dimensional shape that is made by connecting three points with straight li
三角形
三條直邊和三個角的幾何形狀
A two-dimensional shape that is made by connecting three points with straight lines. Every triangle has three sides and three corners.
The maths teacher asked Hao to measure each angle of the triangle on the board.
數學老師請 Hao 量一量黑板上那個三角形的每個角。
collocation: angle of a triangle / measure an angle
A red triangle on a road sign usually means drivers should slow down.
路標上的紅色三角形通常表示駕駛人應該減速。
common use: triangle on road signs
Ada folded the paper so that it formed a perfect triangle.
Ada 把紙對摺，折成了一個完美的三角形。
Sophia drew a triangle with three sides of different lengths for homework.
Sophia 為了幾何作業畫了一個三邊不等長的三角形。
- three-sided figure
a longer, more descriptive phrase; less common in everyday speech
文法句型
triangle + of
用法筆記
In mathematics, triangles are named by their side lengths (equilateral, isosceles, scalene) or by their angles (acute, right-angled, obtuse).
常見錯誤
2. An object, area, or piece of material whose outline looks roughly like a three-s
三角形物
形狀近似三角形的物品或區域
An object, area, or piece of material whose outline looks roughly like a three-sided figure, even though it may not be a mathematically perfect one.
Elena cut the sandwich into a triangle and packed it for her lunch.
Elena 把三明治切成三角形，放進午餐盒。
collocation: cut + [food] + into a triangle
Anjali grows herbs in a small triangle of land at the back of the garden.
Anjali 在花園後方的一小塊三角形土地上種香草。
collocation: a triangle of [land/space/area]
The street market spilled out into a triangle where two roads met.
那條街的市場延伸到兩條路交會處的一塊三角形區域。
Layla folded the napkin into a triangle and set it beside each dinner plate.
Layla 把餐巾摺成三角形，放在每個餐盤旁邊。
文法句型
a triangle of + noun
用法筆記
Common in descriptions of geography, urban spaces, and food preparation. 'A triangle of X' is a frequent pattern.
常見錯誤
3. A small percussion instrument crafted from a slender steel rod that is curved in
三角鐵
金屬棒彎成的三角形打擊樂器
A small percussion instrument crafted from a slender steel rod that is curved into a three-sided open form. A string holds the instrument while the player taps it with a thin metal beater, producing a clear, high-pitched ringing sound.
In the school orchestra, Jude was responsible for playing the triangle.
在學校樂團裡，Jude 負責敲三角鐵。
collocation: play the triangle (instrument)
The triangle gives a bright clear ring when tapped with a thin metal rod.
用細金屬棒輕敲三角鐵，它會發出清脆響亮的聲音。
sound description: high, clear note
The percussionist struck the triangle once at the very end of the song.
那位打擊樂手在歌曲的最後一刻敲了一下三角鐵。
The music teacher showed Sophia how to hold the triangle by its nylon string.
音樂老師教 Sophia 怎麼握住三角鐵上的尼龍繩。
- percussion instrument
the broader category, not a direct synonym
文法句型
play the triangle
strike the triangle
用法筆記
When referring to the instrument as a general type, native speakers say 'the triangle' (e.g., 'She plays the triangle').
常見錯誤
4. A flat drawing aid cut into a right-angled triangular form and crafted from plas
三角板
直角三角形的繪圖量角工具
A flat drawing aid cut into a right-angled triangular form and crafted from plastic or metal. Students and designers use it to draw neat lines and to check or mark specific angles on paper.
Lisa used a triangle to draw parallel lines across her graph paper.
Lisa 用三角板在方格紙上畫了兩條平行線。
collocation: use a triangle to draw [lines]
The architect kept a clear plastic triangle inside her pencil case.
那位建築師把一個透明的塑膠三角板放在鉛筆盒裡。
With a triangle and a ruler, Erik sketched a roof with a steep slope.
Erik 用三角板和直尺，畫出了屋頂的陡峭斜度。
Tariro checked the angle of her line using a clear plastic triangle.
Tariro 用一個透明的塑膠三角板檢查她畫線的角度。
- set square
more common in British English; refers to the same tool
文法句型
use a triangle
draw with a triangle
用法筆記
Also called a 'set square' in British English. 'Triangle' is the more common term in American English classrooms.
常見錯誤
5. A wooden or plastic rack shaped like a triangle, used to pack the balls tightly
三角框
撞球開局時排列球的三角形支架
A wooden or plastic rack shaped like a triangle, used to pack the balls tightly against one another before the opening shot in pool, snooker, or billiards.
The player placed the triangle over the balls before starting the game of pool.
那位玩家把三角框放在球上方，準備開始撞球比賽。
collocation: place the triangle over the balls
Tamar lifted the triangle away after the balls were set for the break shot.
Tamar 在球都擺好、準備開球之後，把三角框拿開。
collocation: lift the triangle away / set the balls
The wooden triangle held all fifteen pool balls in a tight formation.
那個木製三角框把全部十五顆撞球緊緊地排在一起。
The attendant handed Layla a triangle and waited for her to rack the balls.
櫃檯人員遞給 Layla 一個三角框，等她排好球。
- rack
shorter and more common among experienced players; refers to any shaped frame, not just triangles
文法句型
place the triangle over [the balls]
triangle + for [game]
用法筆記
Also called a 'rack' or 'pool rack'. 'Triangle' is the most descriptive term for beginners because it emphasises the shape.
常見錯誤
6. A set of circumstances where three people are emotionally linked with each other
三角關係
三人之間的感情複雜關係
A set of circumstances where three people are emotionally linked with each other — most often, one person has romantic ties with two others, leading to difficult emotions and decisions.
The film tells the story of a love triangle between two brothers and one woman.
這部電影講述的是兩兄弟與一名女子之間的三角戀情。
collocation: love triangle between [three people]
Nadia wanted to avoid being caught in a triangle with her two best friends.
Nadia 不想陷入她和兩個好朋友之間的三角關係。
collocation: caught in a triangle
A messy love triangle at work made everyone in the office uncomfortable.
辦公室裡一段混亂的三角戀情讓每個人都很不自在。
The novel traces a love triangle that lasts more than twenty years.
這本小說描述一段長達二十多年的三角戀情。
- love triangle
the full standard phrase; 'triangle' alone is a shortened form
- complicated relationship
broader and less specific; can describe any difficult relationship, not just three-way involvement
文法句型
a love triangle + between [people]
用法筆記
Almost always appears as 'love triangle' rather than 'triangle' alone. 'Triangle' by itself can sound vague, so the full phrase is strongly preferred in both speech and writing.