/-/https/www.sciencebuddies.org/cdn/Files/21464/5/sb-logo.png){kind=logo}
/-/https/www.sciencebuddies.org/cdn/Files/21464/5/sb-logo.png){kind=logo}
Image Credit
/-/https/www.sciencebuddies.org/cdn/Files/13983/13/constructing-pantograph.jpg)
Description:
Two large skinny pieces of cardboard placed at a right angle. Two smaller pieces of cardboard are placed so that a square is formed by the four pieces of cardboard.
Source:
Sabine De Brabandere, Science Buddies
License:
Science Buddies
/-/https/img.youtube.com/vi/0_GOnBtmv70/0.jpg)
/-/https/img.youtube.com/vi/SjNR8mQKDqo/0.jpg)
/-/https/img.youtube.com/vi/RSxscDvVWwo/0.jpg)