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
Lesson Explainer: Geometric Construction: Congruent Angles and
作図メモ：三角形の1辺と平行な線分 - okamoto7's blog
How to construct an angle of 80 degrees by compass - Quora
How to copy an angle using a compass
How to Construct a 90 Degrees Angle Using Compass and Ruler
Solved CONSTRUCTION: Copy and Bisect Segments and Angles A
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How to Construct an Angle Congruent to a Given Angle: 12 Steps
作図メモ：三角形の1辺と平行な線分 - okamoto7's blog
INCOME TAXATION Tabag Chapter Summaries.pdf - TAXATION - the
SOLVED: Online Hand Hints and Help Extra Project Use compass and
Construction Animation--Math Open Reference
Draw an angle of 40°. Copy its supplementary angle. We will be
INCOME TAXATION Tabag Chapter Summaries.pdf - TAXATION - the
