Geometry questions This is a list of recently added questions about geometry. Play geometry quiz and see all the questions. What is the approximate value of the golden ratio ("phi")?1.61. In mathematics, two quantities are in the golden ratio if their ratio is the same as the ratio of their sum to the larger of the two quantities. It is often used for aesthetics in art and design.Created by: Ninjaihard 47% 3.143.1411792.162.1616201.611.6130220.870.87514painting riddles » Which quadric surface is shaped like a saddle?Hyperbolic paraboloid. The widely sold fried snack food Pringles potato chips resemble a truncated hyperbolic paraboloid. The distinctive shape of these chips allows them to be stacked in sturdy tubular containers, fulfilling a design goal that they break less easily than other types of chip.Created by: Ninjaihard 44% parabolic cylinderparabolic cylinder129elliptic paraboloidelliptic paraboloid418hyperbolic paraboloidhyperbolic paraboloid675elliptic hyperboloidelliptic hyperboloid299mathematics riddles » The geometrical structure depicted in the picture is called ...Spiral of Theodorus. In geometry, the spiral of Theodorus is a spiral composed of contiguous right triangles. It was first constructed by Theodorus of Cyrene.The principle of construction is based on the Pythagorean theorem.Created by: Tschukahard 50% Hippocrates hairpinHippocrates hairpin72Spiral of ArchimedesSpiral of Archimedes226Euclid's crustEuclid's crust118Spiral of TheodorusSpiral of Theodorus423mathematics riddles » In which year did Leonhard Euler introduced the symbol "i" to represent the square root of -1 ?In 1777. The letter "i" as a designation of the element from -1 was proposed by Leonhard Euler in 1777. Later, from 1801, this designation was popularized by Carl Friedrich Gauss. Currently, it is the most commonly used symbol of the imaginary unit.Created by: Tschukahard 43% in 1555in 1555193in 1666in 1666586in 1777in 17771043in 1888in 1888596numbers riddles » What is the shape do erythrocytes in human blood?Oval biconcave disks. In humans, mature red blood cells are flexible and oval biconcave discs. They lack a cell nucleus and most organelles, in order to accommodate maximum space for hemoglobin; they can be viewed as sacks of hemoglobin, with a plasma membrane as the sack. Approximately 2.4 million new erythrocytes are produced per second in human adults.Created by: Tschukaaverage 61% Oval convex discsOval convex discs292One-sided convex discOne-sided convex disc330Oval biconcave disksOval biconcave disks1237SphereSphere156body riddles » The illustration shows the figure known in mathematics as;Lune of Hippocrates,. In geometry, the lune of Hippocrates, named after Hippocrates of Chios, is a lune bounded by arcs of two circles, the smaller of which has as its diameter a chord spanning a right angle on the larger circle. Equivalently, it is a non-convex plane region bounded by one 180-degree circular arc and one 90-degree circular arc. It is the first curved figure to have its exact area calculated mathematically.Created by: Tschukavery hard 25% Tales' sailsTales' sails77Pythagorean sicklesPythagorean sickles73Archimedes' archesArchimedes' arches69lune of Hippocrates,lune of Hippocrates,73mathematics riddles » How is the infinity symbol called?Lemniscate refers not only to the infinity symbol but also to any geometric shape that is curved like a figure-eight.Created by: Ninjaivery hard 18% lemniscatelemniscate91omniscateomniscate306perniscateperniscate59ettoniscateettoniscate43names riddles » A triangle can NOT have sides of ...1cm, 2cm, 3cm. The triangle inequality states that the sum of the lengths of any two sides of a triangle must be greater than or equal to the length of the third sideCreated by: lukasz Polandhard 55% 1cm, 2cm, 3cm1cm, 2cm, 3cm13284cm, 5cm, 6cm4cm, 5cm, 6cm1577cm, 8cm, 9cm7cm, 8cm, 9cm170All of the answers are correctAll of the answers are correct724author: lukasz Poland riddles » How many degrees an obtuse angle can have ?90-180. The obtuse angle may measure from 90 to 180 degrees. Angles having a degree of 0 to 90 are acute angles, whereas those from 180 to 360 - concave angles.Created by: TotalBellendeasy 76% 0-3600-36038590-18090-18090570-900-90302180-360180-3602072mathematics riddles » What is the volume of a soap bubble with radius R=1 cm?4/3π cm3. Equation for the volume of a sphere: 4/3πR^3.Created by: Paweł Kołodziejczykhard 59% 3/4π cm33/4π cm329674/3π cm34/3π cm390974,3π cm34,3π cm31439It isn't possible to calculateIt isn't possible to calculate1914mathematics riddles » Play geometry quiz and see all the questions.