Geometry questions This is a list of recently added questions about geometry. Play geometry quiz and see all the questions. 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 77% 0-3600-36035290-18090-18083660-900-90260180-360180-3601786mathematics 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 cm324724/3π cm34/3π cm375874,3π cm34,3π cm31206It isn't possible to calculateIt isn't possible to calculate1582numbers riddles » If Earth's radius was larger by 1 meter, how much longer would its equator be?By approx 6 meters. For each circle, the length of the circumference is c=2πr. Hence, if a radius grows by 1 meter, the circumference grows by 2 π meters - no matter what the initial value of radius was.Created by: SpikeMehard 44% by approx 6 metersby approx 6 meters11104by approx 6 kilometersby approx 6 kilometers4483by approx 60 kilometersby approx 60 kilometers5212by approx 6000 kilometersby approx 6000 kilometers3913Earth riddles » How many edges does a cube have?12. A cube has six square faces, each of which has four edges - but each edge is shared with another face.Created by: globalquiz.orgvery easy 80% 4428088217412121791716162005math riddles » How many edges does a Möbius strip have?One. The Möbius strip is a surface with only one side and only one boundary component (edge). A line drawn starting from the seam down the middle will meet back at the seam but at the "other side". If continued the line will meet the starting point and will be double the length of the original strip.Created by: globalquiz.orgeasy 72% oneone11164twotwo2877threethree714fourfour561mathematics riddles » What is the maximum distance a plane can fly travelling constantly North?20,004 km. Continous travel North must eventually end at the North Pole. So, the maximum distance is half of the Earth's meridional circumference, which can be reached if a plane starts at the South Pole.Created by: globalquiz.orghard 41% 10,002 km10,002 km133420,004 km20,004 km587540,007 km40,007 km2437It can fly endlessly (as long it can)It can fly endlessly (as long it can)4454aviation riddles » Which direction is not possible to point at when standing at the South Pole?Neither east, west, nor south. At the South Pole every direction is north.Created by: globalquiz.orgaverage 67% easteast476westwest448northnorth4381neither east, west, nor southneither east, west, nor south10928Antarctic riddles » How is this polygon called? (the one over the circles)Square. In this Ehrenstein illusion the sides of a square placed inside a pattern of concentric circles take an apparent curved shape. But in reality, the sides are straight.Created by: Debbie Foxeasy 74% squaresquare24827rhomboidrhomboid3628concave squareconcave square2911concave rhomboidconcave rhomboid2041illusions riddles » Which shape is larger?None of them. Both shapes are the same, but the bottom one is placed more to the right. This is however difficult to notice. It is known as Jastrow Illusion.Created by: globalquiz.orgaverage 65% AA901BB5615None of themNone of them20005Both are largerBoth are larger4056optical illusions riddles » Which line is the longest?All are the same. This illusion has a long research history. It seems that people living in urbanized areas perceive the lines as representing the corners of rectilinear objects viewed in perspective, being more susceptible to illusion than people from rural areas.Created by: globalquiz.orgvery easy 86% AA678BB1818CC367All are the sameAll are the same18296technology riddles » Play mathematics quiz and see all the questions.