 ### Nonagon Inscribed in a Circle

Illustration of a regular nonagon inscribed in a circle. This could also be described as a circle circumscribed… ### Development Exercise of Cone

Development and top completion exercise problem of the cone by dividing the base into equal parts and… ### Development Exercise of Flange and Hood Cones

An exercise problem to complete the top and develop, stretched out, image of the flange and hood cones… ### Development Exercise of Cylinder

An exercise problem in creating a development or rolled out surface of a cylinder in a 4" by 5" drawing… ### Development of Cone

A development, or rolled out, cone where the point A is the meeting point for the sides. The development… ### Development of Cylinder

A rolled out, or development, of the cylinder. The development is created by drawing the top curve with… ### Development of Rectangle Pyramid

The development, or unfolded prism, of the rectangular pyramid. The sides of the prism is joined at… ### Development of Triangle Pyramid

A development, or rolled out, triangle pyramid. The image is created by making an arc at the bottom… ### Development of Two Intersecting Cylinder

A development, or rolled out image, of two cylinders intersecting each other. The large rectangular… ### 12 Triangles Inscribed In A Dodecagon

Illustration of 12 equilateral triangles inscribed in an equilateral dodecagon. Each vertex of the dodecagon… ### 3 Square Inscribed In A Dodecagon

Illustration of 3 squares inscribed in an regular dodecagon. Each vertex of the dodecagon is also a… ### Hexagon And Triangle Inscribed In A Dodecagon

Illustration of a regular hexagon and an equilateral triangle inscribed in a regular dodecagon. This… ### Hexagon Inscribed In A Dodecagon

Illustration of a regular hexagon inscribed in a regular dodecagon. This could also be described as… ### Square Circumscribed About A Dodecagon

Illustration of a square circumscribed about a regular dodecagon. This could also be described as a… ### Square Inscribed In A Dodecagon

Illustration of a square inscribed in an regular dodecagon. This could also be described as a regular… ### Squares Inscribed and Circumscribed About a Regular Dodecagon

Illustration of 2 squares; one inscribed in a regular dodecagon and the other circumscribed about the… ### Triangle Inscribed In A Dodecagon

Illustration of an equilateral triangle inscribed in an equilateral dodecagon. This could also be described… ### Development Exercise of Dome and True Shape of Hip

A development or rolled out image exercise problem of the dome and finding the true shape of the hip,… ### Rhombus Circumscribed About an Ellipse

Illustration of a rhombus circumscribed about an ellipse. This could also be described as an ellipse… ### 10 Congruent Rotated Equilateral Triangles

Illustration of 10 congruent equilateral triangles that have the same center. Each triangle has been… ### 10 Congruent Rotated Equilateral Triangles

Illustration of 10 congruent equilateral triangles that have the same center. Each triangle has been… ### 20 Congruent Rotated Equilateral Triangles

Illustration of 20 congruent equilateral triangles that have the same center. Each triangle has been… ### 5 Congruent Rotated Equilateral Triangles

Illustration of 5 congruent equilateral triangles that have the same center. Each triangle has been… ### Circle Inscribed in a Nonagon

Illustration of a circle inscribed in a regular nonagon. This could also be described as a regular nonagon… ### Triangle Inscribed in a Nonagon

Illustration of an equilateral triangle inscribed in a regular nonagon. This could also be described… ### Development Exercise of Octagonal Light Shade

A problem exercise creating a stretched out or developed image of the octagonal light shade by using… ### Development Exercise of Octagonal Roof and True Shape of Rafter

Problem exercise in drawing a development or a stretchout image of the octagonal roof and finding the… ### 2 Concentric Pentagons

Illustration of 2 concentric pentagons. ### 2 Concentric Pentagons

Illustration of 2 concentric pentagons. ### 2 Congruent Rotated Pentagons

Illustration of 2 regular congruent pentagons that have the same center. One pentagon has been rotated… ### 3 Concentric Pentagons

Illustration of 3 concentric pentagons that are equally spaced. ### 4 Concentric Pentagons

Illustration of 4 concentric pentagons that are equally spaced. ### 4 Congruent Rotated Pentagons

Illustration of 4 regular congruent pentagons that have the same center. Each pentagon has been rotated… ### 8 Congruent Rotated Pentagons

Illustration of 8 regular congruent pentagons that have the same center. Each pentagon has been rotated… ### Development Exercise of Hexagonal Pyramid

A sample exercise problem in completing the top part of the hexagonal pyramid and to create a development,… ### Development Exercise of Oblique Hexagonal Pyramid

A sample exercise problem to complete the top part and create a stretched out image of the oblique hexagonal… ### Development Exercise of Pentagonal Pyramid

A pentagonal pyramid problem exercise to complete the top view of the image, and development, or rolled… ### Development Exercise of Pentagonal Pyramid

The problem exercise in completing the top view and creating the development, or rolled out, image of… ### Pentagon With Sides Labeled

Illustration of a pentagon with sides measuring 6 2/3', 4 1/2', 5 1/3', 4 3/4', and 9 5/12'. ### Square

An illustration of a square and triangles within the square. This is an example of a problem that can… ### Square Inscribed In A Square

Illustration of a square inscribed in a square. The interior square is rotated 45° in relation to… ### 12 Congruent Rotated Squares

Illustration of 12 congruent squares that have the same center. Each square has been rotated 7.5°… ### 16 Congruent Rotated Squares

Illustration of 16 congruent squares that have the same center. Each square has been rotated 5.625°… ### 2 Concentric Squares

Illustration of 2 concentric squares whose vertices are connected by line segments. ### 2 Concentric Squares

Illustration of 2 concentric squares. ### 2 Concentric Squares

Illustration of 2 concentric squares. ### 2 Congruent Rotated Squares

Illustration of 2 congruent squares that have the same center. One square has been rotated 45° in… ### 3 Concentric Squares

Illustration of 3 concentric squares that are equally spaced. ### 3 Congruent Rotated Squares

Illustration of 3 congruent squares that have the same center. Each square has been rotated 30°… ### 4 Concentric Squares

Illustration of 4 concentric squares that are equally spaced. ### 4 Congruent Rotated Squares

Illustration of 4 congruent squares that have the same center. Each square has been rotated 22.5°… ### 6 Congruent Rotated Squares

Illustration of 6 congruent squares that have the same center. Each square has been rotated 15°… ### 8 Congruent Rotated Squares

Illustration of 8 congruent squares that have the same center. Each square has been rotated 11.25°… ### Squares Inscribed In Squares

Illustration of a square inscribed in a square that is inscribed in another square. Each successive… ### Squares Inscribed In Squares

Illustration of a square inscribed in a square that is inscribed in another square. Each successive… ### Squares Inscribed In Squares

Illustration of a square inscribed in a square that is inscribed in another square. Each successive… ### Development Exercise of Cylinder using Three Piece Elbow

The exercise problem of creating a three piece elbow development or rolled out image of the cylinder… ### Nonagon Inscribed in a Triangle

Illustration of a regular nonagon inscribed in an equilateral triangle. This could also be described… ### Development Exercise of Triangular Pyramid

Exercise problem to develop, or rolled out, image of the triangular pyramid by creating an equal length…