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Triangle

Free PNG images in the category “Triangle”: 66 files with transparent background, no sign-up.

A grey prism with soft shading, a black triangle with a white circle cut out, a pentagram drawn in one line, a Chi Rho monogram, a funnel, a wedge splitting a block in a physics diagram, a three-pointed geometric construction, up arrows, star badges — and many chemical ring structures.

Circle168 Sphere20 Metal15 Shape13 Glass10 Liquid5 3D3 Abstract3 Polygon2 Low poly1 Spiral1
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Artificial neural network Backpropagation PNG Artificial neural network Backpropagation PNG 600×600 · 29 KB Wedge Simple machine Angle Force, text PNG Wedge Simple machine Angle Force, text PNG 1300×1300 · 62 KB Chemistry Chemical compound Curcumin PNG Chemistry Chemical compound Curcumin PNG 839×310 · 21 KB Aromaticity Simple aromatic ring Pyridine PNG Aromaticity Simple aromatic ring Pyridine PNG 1100×717 · 36 KB Isoquinoline Naphthalene Aromaticity Simple PNG Isoquinoline Naphthalene Aromaticity Simple PNG 1200×757 · 29 KB Aromaticity Simple aromatic ring PNG Aromaticity Simple aromatic ring PNG 1200×777 · 19 KB Polygon Triangle Area Rectangle Square PNG Polygon Triangle Area Rectangle Square PNG 867×768 · 22 KB Hepatitis C virus Grazoprevir Chemical PNG Hepatitis C virus Grazoprevir Chemical PNG 1217×1024 · 59 KB Quinoline Ether Chemical compound Chemistry PNG Quinoline Ether Chemical compound Chemistry PNG 1920×1289 · 54 KB Acridine Chemical structure Simple aromatic PNG Acridine Chemical structure Simple aromatic PNG 1200×519 · 26 KB Stacking Organic chemistry Benzene Pi bond PNG Stacking Organic chemistry Benzene Pi bond PNG 879×357 · 8 KB Lactam Aromaticity Indole Heterocyclic PNG Lactam Aromaticity Indole Heterocyclic PNG 759×1023 · 19 KB Right to Dream Park Danish 1st Division FC PNG Right to Dream Park Danish 1st Division FC PNG 1200×1200 · 31 KB Ring system Planet Computer Icons, planet PNG Ring system Planet Computer Icons, planet PNG 800×615 · 22 KB United States Air Force Veterans Day PNG United States Air Force Veterans Day PNG 802×814 · 62 KB God Believe in miracles but trust in Jesus PNG God Believe in miracles but trust in Jesus PNG 600×509 · 32 KB Christian Reformed Church in North America PNG Christian Reformed Church in North America PNG 1219×1481 · 136 KB Christian cross, Steel s, christianity PNG Christian cross, Steel s, christianity PNG 800×791 · 22 KB Adinkra symbols Wicca Paganism Pentagram PNG Adinkra symbols Wicca Paganism Pentagram PNG 3883×3739 · 189 KB Triangle Point Symmetry Pattern, triangle PNG Triangle Point Symmetry Pattern, triangle PNG 2096×1907 · 95 KB Flag of Ghana Accra Map National flag, Flag PNG Flag of Ghana Accra Map National flag, Flag PNG 980×980 · 60 KB Al-Anon/Alateen Ha Ni Na, Kyoto, triangle PNG Al-Anon/Alateen Ha Ni Na, Kyoto, triangle PNG 1110×1024 · 28 KB Computer Icons Arrow Symbol, contrast PNG Computer Icons Arrow Symbol, contrast PNG 1024×1024 · 18 KB Manager Computer Icons Button, Icon Free PNG Manager Computer Icons Button, Icon Free PNG 800×800 · 53 KB Computer Icons Upload, arrow feathers PNG Computer Icons Upload, arrow feathers PNG 600×600 · 5 KB Upload Computer Icons, design, web Design PNG Upload Computer Icons, design, web Design PNG 956×981 · 28 KB Gray funnel illustration, triangle glass PNG Gray funnel illustration, triangle glass PNG 1024×1024 · 15 KB Awning Toronto Quarter round Name Angle PNG Awning Toronto Quarter round Name Angle PNG 652×536 · 48 KB Explosion Free content, Explode s, blue PNG Explosion Free content, Explode s, blue PNG 600×671 · 73 KB Explosion Cartoon, Explode s, purple, blue PNG Explosion Cartoon, Explode s, purple, blue PNG 600×671 · 74 KB Computer Icons Bomb Explosion, bomb, blue PNG Computer Icons Bomb Explosion, bomb, blue PNG 1600×1600 · 100 KB Triangle shape art illustration, Arch Linux PNG Triangle shape art illustration, Arch Linux PNG 980×982 · 43 KB Delta Greek alphabet Uncial script Letter PNG Delta Greek alphabet Uncial script Letter PNG 711×600 · 13 KB Explosion, Boilover, Water, Water Vapor PNG Explosion, Boilover, Water, Water Vapor PNG 1200×1050 · 49 KB Justice Measuring Scales, english, triangle PNG Justice Measuring Scales, english, triangle PNG 3333×2879 · 166 KB Computer Icons Measuring Scales, value icon PNG Computer Icons Measuring Scales, value icon PNG 980×980 · 36 KB Computer Icons Measuring Scales, WEIGHT PNG Computer Icons Measuring Scales, WEIGHT PNG 1600×1600 · 25 KB T-shirt United States Navy Redfoxtees Axin PNG T-shirt United States Navy Redfoxtees Axin PNG 1071×1024 · 98 KB Green string illustration, White Line art PNG Green string illustration, White Line art PNG 2244×416 · 137 KB Santa Claus Paper Tree-topper Christmas PNG Santa Claus Paper Tree-topper Christmas PNG 1280×1600 · 909 KB Wedding invitation Business Retail PNG Wedding invitation Business Retail PNG 2000×1972 · 128 KB Arrow Encapsulated PostScript Computer PNG Arrow Encapsulated PostScript Computer PNG 600×600 · 5 KB Drop-down list Computer Icons Hamburger PNG Drop-down list Computer Icons Hamburger PNG 980×538 · 5 KB Graphics Compass rose Wind rose, compass PNG Graphics Compass rose Wind rose, compass PNG 768×768 · 47 KB Blue diamond Diamond color Gemstone Pink PNG Blue diamond Diamond color Gemstone Pink PNG 1800×1800 · 805 KB Ruby Gemstone Sapphire, ruby, heart PNG Ruby Gemstone Sapphire, ruby, heart PNG 1080×627 · 52 KB Samsung Galaxy A5 (2017) Samsung Galaxy S6 PNG Samsung Galaxy A5 (2017) Samsung Galaxy S6 PNG 1024×1024 · 887 KB Compass rose Wind rose Computer Icons PNG Compass rose Wind rose Computer Icons PNG 1600×1600 · 35 KB

Why chemistry dominates

Molecules are drawn as polygons: a nitrogen ring of five corners, benzene as a hexagon, fused rings sharing an edge. The source tagged them by shape, so structural formulas take a large share of this page. For a chemistry lesson they are useful as they are; for pure geometry, skip past them to the prism, the irregular polygon and the construction diagram.

Neighbours in the section

The abstract section also has pages for circles, polygons, low-poly art and general geometric shapes. This one is narrower: anything where a three-cornered form carries the picture, from arrowheads and star points to religious monograms built from straight strokes. For patterns and faceted illustrations, the polygon and low-poly pages are the better start.

Checking line work

In diagrams and formulas the important thing is even line weight and readable letters. Zoom into the preview and make sure the atom labels and angle marks are sharp; thin lines on a transparent background can vanish against dark slides, so place them on white or a light tint.