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: TotalBellendmathematics riddles »easy 76% 0-3600-36022190-18090-18043160-900-90153180-360180-360931 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 Kołodziejczyknumbers riddles »hard 57% 3/4π cm33/4π cm312524/3π cm34/3π cm335284,3π cm34,3π cm3655It isn't possible to calculateIt isn't possible to calculate735 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: SpikeMeEarth riddles »hard 43% by approx 6 metersby approx 6 meters5332by approx 6 kilometersby approx 6 kilometers2184by approx 60 kilometersby approx 60 kilometers2689by approx 6000 kilometersby approx 6000 kilometers2160 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.orgmath riddles »easy 78% 441728810391212828816161024 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.orgmathematics riddles »easy 73% oneone7429twotwo1868threethree473fourfour387 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.orgaviation riddles »hard 42% 10,002 km10,002 km97520,004 km20,004 km426240,007 km40,007 km1805It can fly endlessly (as long it can)It can fly endlessly (as long it can)3074 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.orgAntarctic riddles »average 67% easteast322westwest325northnorth2995neither east, west, nor southneither east, west, nor south7673 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 Foxillusions riddles »easy 74% squaresquare15053rhomboidrhomboid2088concave squareconcave square1749concave rhomboidconcave rhomboid1192 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.orgoptical illusions riddles »average 61% AA636BB3918None of themNone of them11361Both are largerBoth are larger2699 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.orgtechnology riddles »very easy 85% AA373BB1204CC220All are the sameAll are the same10768 Play mathematics quiz and see all the questions.