Practical Geometry

A quadrilateral can be constructed uniquely if Four sides and one diagonal are given.

Three sides and two diagonals are given.

Two adjacent sides and three angles are given.

Three sides and two included angles are given.

Some special cases:

Construction of a square when one of the sides is given.

Construction of a rhombus when the lengths of two diagonals are given.

Construction of a rectangle when two adjacent sides are given.

An arc is a part of the circumference of a circle.

A perpendicular bisector is a line or a line segment that passes through the mid-point of another line segment and is perpendicular to it. A quadrilateral is a polygon with four sides.

Rectangle is a quadrilateral having four right angles.

Rhombus is a quadrilateral with all sides equal in length.

Square is a quadrilateral with all sides equal in length and all angles of equal measure each 90°.

A parallelogram is a quadrilateral that has two pairs of parallel sides. Kite is a quadrilateral with two distinct pairs of adjacent sides that are congruent.

A point where any two sides meet is called vertex.

The line segment that makes up a polygon is called side.

Diagonal is a line segment that joins two non consecutive vertices of a polygon.

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