How to copy an angle with compass and straightedge or ruler - Math
![](https://www.mathopenref.com/images/constructions/constcopyangle/proof.png)
Given an angle formed by two lines with a common vertex, this page shows how to construct another angle from it that has the same angle measure using a compass and straightedge or ruler. It works by creating two congruent triangles. A proof is shown below. A Euclidean construction
![](https://d138zd1ktt9iqe.cloudfront.net/media/seo_landing_files/supplementary-angle-1633109385.png)
Draw an angle of 40°. Copy its supplementary angle. We will be
![](https://www.mathopenref.com/images/constructions/constangle90/proof.gif)
How to construct a 90 degree angle with compass and straightedge
![](https://study.com/cimages/videopreview/videopreview-full/eq5w7siub2.jpg)
How to Construct Congruent Angles, Geometry
![](https://cdn.numerade.com/ask_previews/a4cf62a-3882-e28-eb36-31bac32b6eb2_large.jpg)
SOLVED: I just need help with 16 :) Use the Angle Addition
![](https://slader-solution-uploads.s3.amazonaws.com/11989c31-e9f4-4fa6-bf54-dc73ada66dbf-1700532614495698.png)
Using a compass and straightedge only, copy angle X and bise
![](https://www.wikihow.com/images/thumb/6/6f/Construct-an-Angle-Congruent-to-a-Given-Angle-Step-9-Version-3.jpg/v4-460px-Construct-an-Angle-Congruent-to-a-Given-Angle-Step-9-Version-3.jpg.webp)
How to Construct an Angle Congruent to a Given Angle: 12 Steps
Practice Probie m Learning Objectives: Annie is using a compass
![](https://www.dummies.com/wp-content/uploads/9781119181552-fg2009-REV.gif)
How to Copy a Triangle Using a Compass - dummies
Mastering Compass and Straightedge Constructions
Solved: 1. When copying line segment AB using a straight edge and
![](https://www.coursehero.com/thumb/3d/98/3d98866a90d9d8de7165bbed478af2c5ae9d7231_180.jpg)
16 Calcular la densidad de Hidróxido de amonio NH4OH que pesa 600