# 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: TotalBellend

easy

77%

0-360

0-360

352

90-180

90-180

8366

0-90

0-90

260

180-360

180-360

1786

## 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: SpikeMe

hard

44%

by approx 6 meters

by approx 6 meters

11104

by approx 6 kilometers

by approx 6 kilometers

4483

by approx 60 kilometers

by approx 60 kilometers

5212

by approx 6000 kilometers

by approx 6000 kilometers

3913

## 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.org

easy

72%

one

one

11164

two

two

2877

three

three

714

four

four

561

## 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.org

hard

41%

10,002 km

10,002 km

1334

20,004 km

20,004 km

5875

40,007 km

40,007 km

2437

It can fly endlessly (as long it can)

It can fly endlessly (as long it can)

4454

## 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.org

average

67%

east

east

476

west

west

448

north

north

4381

neither east, west, nor south

neither east, west, nor south

10928

## 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 Fox

easy

74%

square

square

24827

rhomboid

rhomboid

3628

concave square

concave square

2911

concave rhomboid

concave rhomboid

2041

## 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.org

average

65%

A

A

901

B

B

5615

None of them

None of them

20005

Both are larger

Both are larger

4056

## 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.org

very easy

86%

A

A

678

B

B

1818

C

C

367

All are the same

All are the same

18296

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