insider.si.edu

Geometric Model by A. Harry Wheeler, Equilateral Triangle with Inscribed Rectangle or Parallelogram with an Inscribed Square, Plane Dissection

Click to open image viewer. Hinged Plane Dissection, Three quadrilaterals and one triangle which can be arranged as a triangle or a quadrilateral (front side). CC0 Usage Conditions ApplyClick for more ...
BBC

What is dead, living and non-living?

The environment around us is full of dead, living and non-living things. Trees and animals are living things. Dry leaves on the ground are dead, but they were once part of a living tree. The bones of ...
Smithsonian Magazine

These Objects Begin to Tell the Story of Women’s History in America

Thirteen artifacts from the National Museum of American History chronicle profound changes in the life of the nation Photographs by Jessica Antola by Robin Marantz Henig The sexual revolution didn’t ...
BBC

Area of parallelograms

The base and perpendicular height are at right angles. Showing that a parallelogram has the same area as a rectangle: Split the parallelogram into a right-angled triangle and a trapezium. Move the ...
GitHub

Image annotation with Python.

Labelme is a graphical image annotation tool inspired by http://labelme.csail.mit.edu. It is written in Python and uses Qt for its graphical interface. Looking for a ...