This book is an attempt to rescue trigonometry from the bounds of boredom... Parker, who was born in Australia, is maths royalty... Parker is funny, likeable and aware enough of his audience to carry them along. And those who persevere will end up smarter than they were when they started it. You’ll use triangles to understand Einstein’s relativity, and end up at the stark realisation that, at the quantum level, matter - you, I, this book - is all just a set of triangles -- Tom Calver - Sunday Times

Matt Parker is a real nerd’s nerd... but we’re in safe hands here as we range from those curvy walls of glass that architects seem to love, to why everyone sees a different rainbow. A funny and often surprising guide to the history of triangles - and the applications (both practical and highly impractical) of trigonometry -- Tim Harford - Financial Times

I felt well looked-after, and handled with saint-like patience... Parker has a fine old time with his material, and only a curmudgeon could fail to be charmed by his willingness to call the elongated pentagonal gyrocupolarotunda a “dumb shape”, or Heron’s 2,000-year-old formula for finding the area of a triangle “stupid”. Nor, in the latter case, is he wrong. Four stars -- Simon Ings - Telegraph

The maths he expounds so expertly and so clearly is always fascinating -- Nick Rennison - Mail on Sunday

Very funny... When it clicks, it is glorious -- Chris Stokel-Walker - New Scientist

Despite dealing with what might be familiar concepts, Love Triangle shows that geometry and trigonometry can pop up in exciting and unexpected places. From cosmology to skateboarding, Parker argues that triangles underpin both the epic and the everyday. The book, which is funny and accessible, would also be suitable for keen teenage readers -- Katherine Skipper - Physics World

Move over Euclid. It’s Parker Time. Love Triangle is a blissful blend of pure science and pure merriment. Edifying, entertaining, excellent! -- Alex James

Matt Parker is unique: he's made me laugh about math many times by showing just how weird it can get. He's also made me cry about math by showing how transcendently beautiful it is -- Adam Savage

Fine. Triangles are now my favourite shape -- Hannah Fry

The author has a gift for making somewhat tedious topics not only comprehensible and absorbing, but also great fun... Parker’s tireless enthusiasm, light touch, and inviting manner make for a reading experience akin to a visit to Epcot Center, led by a guide in possession of childlike wonder in addit