A circle, a square and an equilateral triangle all have the same perimeter equal to 1 meter. Compare their areas.

Individual problems from throughout mathematics history, as well as articles that include problem sets for students.

Having been given the lengths, a and b, of two straight lines drawn from the acute angles of a right triangle to the middle of the opposite sides, determine the length of those sides.

A mouse is at the top of a poplar tree 60 braccia high, and a cat is on the ground at its foot. The mouse decends 1/2 a braccia a day and at night it turns back 1/6 of a braccia.

Gun metal of a certain grade is composed of 16% tin and 84% copper. How much tin must be added to 410 lbs. of this gun metal to make a composition of 18% tin?

Now there are six-headed four legged animals and four-headed two-legged birds. Find the total number of animals and birds.

Prove geometrically that the hypocycloid is a straight line when the radius of the rolling circle is one-half the radius of the fixed circle.

The third part of a necklace of pearls, broken in a lover's quarrel, fell to the ground...

Seven men held equal shares in a grinding stone 5 feet in diameter. What part of the diameter should each grind away?

Given the fraction ax/ (a-x ), convert it into an infinite series.

Given a pyramid 300 cubits high, with a square base 500 cubits to a side, determine the distance from the center of any side to the apex.