# Straightedge and Compass

Geometric figures, such as angles, can be constructed using straightedge and compass.

In this case, measuring instruments such as protractor and ruler are not permitted

A ruler can be used if and only if its markings are not used.

Below, find a variety of important construction in geometry:

Bisecting and copying angles:

Bisecting an angle
Learn how to bisect an angle. Nice and fully illustrated demonstrations.

Copying an angle
Learn how to copy any angle with ease using step by step guidelines.

Constructing perpendiculars and midpoint of a segment:

Constructing perpendiculars
Learn how construct a line perpendicular to another line through a point on the line or not on line.

Constructing the midpoint of a segment
Learn how use only a ruler and a compass to get the midpoint of a segment

Constructing triangles:

Constructing an equilateral triangle
Learn how construct an equilateral triangle given the length of any segment.

Constructing an isosceles triangle
Learn how construct an isosceles triangle given the length of any segment.

## Recent Articles

1. ### Average age word problem

Aug 09, 16 01:40 PM

Average age of Dipu and Apu is 22 years. Average age of Dipu and Tipu is 24 years. Age of Dipu is 21 years. What are the ages of Apu, and tipu ? Let