Construction of Angles and their bisectors

The video tutorial covers the concept of angles and their applications in various fields such as architecture and combat. It provides a detailed guide on constructing a 50-degree angle using a protractor, copying an angle without a protractor using a compass, and constructing an angle bisector. The tutorial emphasizes practical geometry skills and the use of basic geometric tools like protractors and compasses.

What is the first step in constructing a 50-degree angle using a protractor?

• Mark a point on the paper.

• Draw a perpendicular line.

• Draw a line segment of any length.

• Draw a circle with a compass.

When copying an angle using a compass, what is the purpose of swinging an arc from the original angle?

• To measure the angle directly.

• To draw a straight line.

• To create a new angle.

• To mark points where the arc intersects the angle's rays.

What should you do after setting the compass to the length of PR when copying an angle?

• Draw a new line parallel to the original.

• Erase the original angle.

• Swing an arc intersecting the previously drawn arc.

• Measure the angle with a protractor.

What is the first step in constructing an angle bisector?

• Draw a perpendicular line from the vertex.

• Draw a line parallel to one arm of the angle.

• Place the compass needle on the vertex and swing an arc.

• Measure the angle with a protractor.

After intersecting the two arms of the angle with arcs, what is the next step in constructing an angle bisector?

• Draw a straight line through the vertex.

• Swing two small arcs to intersect at a point.

• Measure the angle with a protractor.

• Erase the intersecting arcs.