To calculate the perimeter, label and add up the length of each side. This shape is made from two rectangles. What is the perimeter of this shape? First, calculate the missing lengths \(x\) and \(y\).

Learning got hands-on and a little sticky in Mrs. Freilinger’s 1st grade class at Higgins Elementary as students explored 3D ...

the shape before him is that of a two-dimensional circle. The sphere has visited the square intent on making the square understand the three-dimensional world that he, the sphere, belongs to.

Hard as it may be to imagine, there’s a newly defined geometric shape on the books. Based on recent calculations, mathematicians have described a new classification they now call a “soft cell.” In its ...

Visualizing three-dimensional objects presented on the flat ... way a teacher intended may be next to impossible. Consider the two figures shown below.

Southern California artist Joshua Vides curated a visually striking exhibit in downtown LA last weekend featuring three cars ... sports car shapes look like they were flat, two-dimensional drawings.

The area of the rectangle is 8 cm 2. Two triangles make the rectangle. The area of one triangle is half the area of the rectangle. \(8 \div 2 = 4~\text{cm}^2\) The area of a triangle can also be ...