Proportions
This mathematics ClipArt gallery offers 38 illustrations that can be used when teaching the concept of proportionality. A proportion is an equation stating that two ratios are equal. Images are of similar figures, including those that can be used in application problems.
Construction of Geometric Revolution
"The distance of A and B below H is indicated on the V projection. Thus if to A∧h B∧h the perpendiculars…
Revolutions into the Plane of Geometric Shapes
"The H projection of the line AB in the space is a line connecting the feet of all the perpendiculars…
Successive Revolutions of Geometric Shapes
"A block revolved from its first position about an axis perpendicular to H through 45 degrees, then…
2 Ladders Leaning Against a Tree
Illustration of 2 ladders leaning against opposite sides of a palm tree to form similar right triangles.…
3 Ladders Leaning Against a Wall
Illustration of 3 ladders leaning against the side of a building (wall) to form right triangles. The…
Lever and Fulcrum
Illustration of a lever with fulcrum F. W represents the weight lifted, P is the force that does the…
Steel-yard Used as a Lever
Illustration of an ordinary steel-yard being used as a lever. F represents the fulcrum. Weight P is…
Parallel Lines Cut by Transversals
Illustration that shows if two parallel lines are cut by three or more transversals that pass through…
Parallel Lines Cut by Transversals
Illustration that shows if two parallel lines are cut by three or more transversals that pass through…
Measuring Tree Height
A man measuring the height of a tree by determining the angle and how far away he is standing.
Similar Polygons (Pentagons) That Can Be Used To Show Proportionality
Illustration that shows similar polygons (pentagons) that can be used to show proportionality.
Similar Polygons (Pentagons) That Can Be Used To Show Proportionality
Illustration that shows similar polygons (pentagons) that can be used to show proportionality.
Hydraulic Machine Exerting Pressure
Illustration of a hydraulic machine. "A principle known as Pascal's Law states that pressure exerted…
Triangle Pyramid Side Projections
The illustration showing the projection of the triangles from the triangle pyramid as shown on top.…
Angle Bisector of Triangle Dividing Opposite Side Into Proportionate Segments
Illustration to show that an angle bisector of a triangle divides the opposite side into segments which…
Exterior Angle Bisector of Triangle Dividing Opposite Side Into Proportionate Segments
Illustration to show that a bisector of a an exterior angle of a triangle divides the opposite side…
Parallel Lines Cut by Parallels, Corresponding Intercepts Proportional
Illustration to show that if parallel lines are cut by any number of parallels, the corresponding intercepts…
Triangle Divided by Parallel Lines to Form Proportionate Triangles
Illustration to show that if a line is drawn through two sides of a triangle parallel to the third side,…
Triangle Divided by Parallel Lines to Form Proportionate Triangles
Illustration to show that if a line divides two sides of a triangle proportionally, it is parallel to…
Revolution About Axis Forward or Back
"The pyramid be revolved about an axis perpendicular to V, the front view will be unchanged and may…
Revolution About Axis Perpendicular to H
The object can revolve around an axis (H) to create a projection on the other plane without changing…
Revolution About Axis Perpendicular to V
"The pyramid be revolved about an axis perpendicular to V, the front view will be unchanged and may…
Palm Tree Perpendicular to Ground
Illustration of a palm tree that is perpendicular to the ground. The tree is perfectly straight, as…
Using Proportions To Find Heights of Trees
Triangle diagram for measuring heights of trees using proportions.
Using Proportions To Find Heights of Trees
Triangle diagram for measuring heights of trees using proportions
Right Triangle Inscribed in Semicircle Shows Mean Proportional
Right triangle inscribed in semicircle. Illustration shows that the perpendicular from any point in…
Mutually Equiangular Similar Triangles
Illustration that shows two mutually equiangular triangles are similar.
Similar Triangles With Respective Sides Parallel or Perpendicular
Illustration that shows that two triangles which have their sides respectively parallel, or respectively…
Similar Triangles
Illustration of a triangle divided by a parallel line to form two similar triangles.
Similar Triangles for Distance Across Lake
Illustration of similar triangles used to find distance across a lake.
Similar Triangles for Distance Across Stream
Illustration of similar triangles used to find distance across a stream
Similar Triangles for Height of Smokestack
Illustration of similar triangles used to find height of smokestack.
Similar Triangles With Altitudes Drawn
Illustration that shows two similar triangles with altitudes drawn.