Belated #tessellation picture from the Nizami mausoleum in Ganja, Azerbaijan. This pattern appears in several place… t.co/TiHljT2fSj - @numberdance

Let's make a penis! #symmetry #mathphoto16 t.co/ZT0BSJzUbe - @AirplaneToPenis

Babushka dolls from #Spain for measurement #mathphoto17 t.co/Zh04MNs40u - @MelissaSeco

Dense foliage blocking the sun in the back yard #multiples #mathphoto16 t.co/QZ6UdV97HJ - @bstockus

Piggy bank #array. 20 stacks of 4 nickels makes $4. #mathphoto17 #tmwyk t.co/goeAfbvykN - @TheErickLee

Loving this floor pattern! #tesselation #MathPhoto17 t.co/eElwohG1vr - @mavenofmath

A trio of colorful, art inspired arrays. Giant spools of thread, powdered pigments, and glaze trials. #array… t.co/lIp0EbR0e5 - @pinn

Oeuvre d'Eric Godin dans LaPresse+ 31 décembre 2015 - #mathphoto16 #symmetry #scale t.co/Ckk2NREIwl - @celinerc

Thanks to all who joined in #Mathphoto17! Still archiving: t.co/ggdAZXsSrO & t.co/SRFzq81zEo Who w… t.co/6DVMF6rNIS - @carloliwitter

Hong Kong #mathphoto17 #lines t.co/aVOEx5uOYe - @mtrushkowsky

#MathPhoto17 RCMP Musical Ride in Halifax, NS. An array of horses. t.co/AxvTuDAoUA - @DenisejMac

#lines at the Smithsonian Art Museum. #mathphoto17 t.co/IQ4tHEX5wF - @Zakchamp

Nice #array by the kiddo. She drew a line and arranged the chalk in same order. 🌈 #mathphoto17 #tmwyk t.co/guyddiaaRy - @mrsforest

If you don't know, look up #gaudí - right - now... #multiples at La Sagrada Familia in Barcelona, Spain #mathphoto16 t.co/rbkPa1heJo - @mskquez

Typically surrounded by city views, round hay bales in sight r a lovely alternative :) Examples of #solids for last… t.co/o46MwhAOGD - @RiversoMaria

Tessellations in the playroom today. Legos and the arm of this chair. #mathphoto17 #tessellation t.co/QvLFegHuAZ - @mrsforest

Jain #array @RubinMuseum. #mathphoto17 t.co/yw4DbWlmIN - @mskleinbart

#mathphoto16 #scale 3 generations of Pie Face t.co/aZJQJZkIn6 - @pearse_margie

#PrincessKay butter sculptures! #HowMuchButter?! #mathphoto17 #solids #MathIsEverywhere #OnlyInMN #MNStateFair… t.co/j1TNO4mUZQ - @daukmath

Noticing a row of geometric #solids while candlepin bowling. #mathphoto17 t.co/ed39aNmOOS - @TheErickLee

NH farmers' market not my pic but got permission to share! #mathtalk #fractiontalk #mathphoto17 #MTBoS t.co/iRmG7WEnmB - @normabgordon

#NYC is a great place for #mathphoto16 week 3 challenge #lines t.co/70004u7Nvv - @MathDenisNJ

Chairs on Swarthmore's campus with 6' son to help create sense of #scale #mathphoto16 @Durant100 @themathforum @NCTM t.co/yvDsyBZ4ED - @SuMACzanne

#VW #scale #mathphoto17 t.co/rMaOIBvb1N - @Just_in_Moore

Trapezoidal and conical large #scale earth #solids @CahokiaMounds built by the Mississippian culture #mathphoto17 t.co/hkIQGgokkg - @julietaSpace

Nature loves a good fractal space-filling curve. Spotted at Gardens by the Bay in Singapore #mathchat #mathphoto17… t.co/ePUfHc0MRH - @misterwootube

@mathphoto16 some very interesting maths/physics concepts here, don't you think? #mathphoto16. t.co/fJ8JmhiU0R - @ann_ruckert

We're finding crazy shapes around the @24game offices! #mathphoto16 📷 t.co/HeSIMUiS5s - @24game

#symmetry is everywhere in #persian #architecture. Tons of beauty in #isfahan and #shiraz #mathphoto17 t.co/3yZNxFFJBM - @anndurham13

1:150 #scale model of the Baths of Antonius in #Carthage #Tunisia #mathphoto17 t.co/YNmD1B3NIR - @anndurham13

These were the three. (Oops!) #mathphoto16 Scale t.co/tuz9AkQxo4 - @mburwitz

.#mathshapes @mathphoto16 #mathphoto16 t.co/CVZAsbuStg - @Vaughn_trapped

A tile at #USC #mathphoto17 #symmetry t.co/Jg0cLIQVZO - @aprilf4175

Stroller parking lot at Disney World means families are off having fun so no passengers here #zero #mathphoto16 t.co/rvQJzlSF5v - @GlinsmannMath

Noticing geometric #solids this afternoon on my walk around Garry Point, Steveston, BC #MathPhoto17 t.co/xx82aQcWbl - @jnovakowski38

Learning to split! Students getting their sweaty brains on during Math! #Education #mathphoto17 #educationmatters… t.co/2Oad3nuelR - @MeaganClarke82

Retweeted judy keeney (@JudithKeeney): How many dinosaurs? How did you think about it? #mathphoto17 #arrays... t.co/FkSahSqIVR - @DysMLD

Concave #solids, salt drying stones at Lapakahi State Park t.co/EVxfQ5JGfe #mathphoto17 t.co/V2KiyM09iG - @julietaSpace

#mathphoto16 😛 t.co/JtQwCjZeyY - @profebernabeu

#mathphoto17 #Tessellation Capilla de Santa Catalina en la Catedral de Burgos t.co/LCbANSf5bY - @alfgoralo

.@mathphoto16 so many #shapes and shadows and lines #3DGeometry #mathphoto16 t.co/wWJgBqjCDM - @normabgordon

Lines! (Headlamp selfie before the Tread Nightly Trail Race at @usnwc) #mathphoto17 t.co/kqEqAB2J80 - @DaveCesa

Confusing parking lot lines! #mathphoto16 #lines t.co/fk8kxhiSyh - @debboden

Love the #mathphoto17 for this new school year @RHS_Eagles @ansil_howard @theceebru @redoakdriving @MsJP_101 t.co/B3dfJ3wNOT - @sssmith0903

Noticing both human-made & nature-made bilateral/reflection #symmetry in Kelowna, BC #MathPhoto17 t.co/81YnakZPk9 - @jnovakowski38

How many mirrored tiles on this ornament? #estimation #mathphoto17 #math #maths t.co/6nRENNDW4S - @24game

So many types of #lines & #symmetry in Málaga, Costa del Sol #mathphoto17 #MathInSpain t.co/3sYJp6GDKH - @MelissaSeco

#scale #mathphoto16 t.co/IM2LpuSKDA - @WsRachael

#addition with monopoly houses @hamptonstats #mathphoto16 t.co/5lPrDaf8la - @mickellarose

a Hawaiian roll that especially delicious #symmetry #mathphoto17 t.co/j98YRItvns - @aprilf4175