A flashcard featuring an illustration of a Pyramid with a Triangular Base
A balance with two blocks and a slice of cake on the left and three one-unit blocks and one 25-unit…
Illustration of a trapezoid with altitude a and bases b and b' used to demonstrate that the area is…
Illustration of a right triangle used to show the Pythagorean Theorem (the square of the hypotenuse…
Illustration of a truncated prism - the part of a prism included between the base and a section made…
Illustration of a parallelopiped with a plane passing through two diagonally opposite edges. The plane…
Illustration of a parallelopiped with a plane passing through two diagonally opposite edges. The plane…
Illustration of a parallelopiped (a prism with a parallelogram as its base) used to demonstrate that…
Illustration of a prism used to demonstrate that the volume of any prism is equal to the product of…
The frustum of a pyramid is the portion of a pyramid included between the base and a section parallel…
The frustum of a pyramid is the portion of a pyramid included between the base and a section parallel…
The frustum of a pentagonal pyramid is the portion of a pyramid included between the base and a section…
Illustration of a regular pyramid with a pentagon for a base.
Illustration of pentagonal and triangular pyramids cut by a plane parallel to the bases.
Illustration of triangular pyramid used to show that the volume is the limit of the sum of the volumes…
Two triangular pyramids having equivalent bases and equal altitudes are equivalent.
Illustration of triangular pyramid used to show that the volume is equal to one third of the product…
Illustration of pentagonal pyramid used to show that the volume is equal to one third of the product…
The frustum of a triangular pyramid is equivalent to the sum of three pyramids whose common altitude…
The volume of the frustum of any pyramid is equal to the sum of the volumes of three pyramids whose…
Illustration showing that the volume of 2 triangular pyramids, having the same trihedral angle of the…
A truncated triangular prism is equivalent to the sum of three pyramids, whose common base is the base…
A truncated triangular prism is equivalent to the sum of three pyramids, whose common base is the base…
A volume of a truncated right triangular prism is equal to the product of its base by one third the…
A volume of a truncated right triangular prism is equal to the product of its base by one third the…
Illustration of a plane parallel to the base passing through a cone (section made is a circle).
Illustration of a plane parallel to the base passing through a cone (section made is a circle).
Illustration of a pyramid and with a regular polygon inscribed in and circumscribed about a cone. "If…
Illustration of a cone of revolution used to show that the lateral area is equal to half the product…
Illustration of a cone with a polygon inscribed used to show that the volume of a circular cone is equal…
"The volume of a frustum of a circular cone is equivalent to the sum of the volumes of three cones whose…
Trade Dollar ($1.00) United States coin from 1873. Obverse has a seated, left-facing Liberty holding…
Projections of a triangular prism or block with a square hole.
Illustration of the method of finding the projection, in the form of an ellipse, of the top of a cylinder…
Illustration of a right circular cone with the diameter of the base equal to the height of the cone.
Illustration of a right circular cone with the diameter of the base greater than the height of the cone.
Illustration of 4 congruent tangent right circular cylinders. The height of all the cylinders is greater…
Illustration of 3 right congruent tangent circular cylinders. The height of all the cylinders is greater…
Illustration of 3 right congruent tangent circular cylinders. The height of all the cylinders is greater…
Illustration of a frustum of a right circular cone with hidden edges shown. When a cone is cut by a…
Illustration of a frustum of a right circular cone. When a cone is cut by a plane parallel to the base,…
Illustration of a right circular cone that has been cut by a plane parallel to the base. The lower part…
Illustration of a right circular cone that has been cut by a plane parallel to the base. The top section…
Illustration of a decagonal pyramid that has been cut by a plane parallel to the base. The top section…
Illustration of a hollow decagonal pyramid that has been cut by a plane parallel to the base. The top…