Császár polyhedron

The Császár polyhedron is a nonconvex polyhedron with 14 triangular faces.

Байланысты экстралар

Reflecting a circle across an axis

Axis t and a circle with centre O and radius r are given on a...

Reflecting a triangle across an axis

Axis t and triangle ABC are given on a particular plane. Let’s...

Measuring the height of a cathedral

We will measure the height of this large cathedral with a set...

Plotting a perpendicular to a line at a given point P on the line

Both line e and point P, which is situated on it, are given. Let’s...

Plotting a 45° angle

By bisecting a straight angle (180°), we get a right angle (90°)....

Plotting points at a given distance from a line

Line e is given. Plot point P at a distance of 2 cm from line e.

Plotting parallel lines – Solution II

Let’s construct a rhombus such that one of its sides lies on line...

How to copy an angle

Let’s copy a given alpha convex angle onto ray f with starting...

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