How to add two angles with compass and straightedge or ruler

Shows how to construct add one given angle to another using a compass and straightedge or ruler. A proof is shown. A Euclidean construction

Trisecting the angle with a straightedge

Angelo drew two lines meeting at a right angle. What is the smallest number of extra lines he could draw inside his right angle, as shown, so that for any of the

Constructing Angle Bisectors - Construction using a compass, proof of angle bisector, examples.

Constructing Angles How to Construct Angle with Protractor and Compass

Constructing Congruent Angles – GeoGebra

How To Construct A 60 Degree Angle - GCSE Maths - Steps & Examples

Construct a Triangle Given Two Angles and the Included Side

Constructing a 20 Degree Angle using Ruler and Compass

Geometry Constructions -- Adding and Subtracting Angles

Constructing Triangles: Types of Geometric Construction - Lesson

Angelo drew two lines meeting at a right angle. What is the smallest number of extra lines he could draw inside his right angle, as shown, so that for any of the