Constructing Angle Bisectors with Compass and Straightedge

The video tutorial explains how to construct an angle bisector. It begins by identifying the angle to be bisected and finding two equidistant points on the angle's rays using a circle. The tutorial then demonstrates how to draw a line equidistant from these points, forming the angle bisector. Finally, it verifies the bisector's accuracy by showing that the resulting triangles are congruent, ensuring the angles are equal.

What is the main goal when constructing an angle bisector?

• To create a line that is parallel to the angle

• To create a line that is perpendicular to the angle

• To create a line that divides the angle into two unequal parts

• To create a line that divides the angle into two equal parts

Tags

CCSS.HSG.GPE.B.6

What is the first step in finding two equidistant points on the rays of the angle?

• Drawing a line

• Drawing a circle

• Drawing a square

• Drawing a triangle

Tags

CCSS.HSG.CO.C.9

Why are the points on the circle equidistant from the center?

• Because they are on different circles

• Because they are on different lines

• Because they are on the same circle

• Because they are on the same line

What is the purpose of constructing a line equidistant from the two points found?

• To create a perpendicular bisector

• To create a parallel line

• To create an angle bisector

• To create a tangent line

Tags

CCSS.HSG.CO.C.9

What tool is used to draw circles centered at the equidistant points?

• Protractor

• Ruler

• Square

• Compass

What is the radius of the circles drawn with the compass?

• Equal to the distance between the two rays

• Equal to the distance between the center and the other point

• Equal to the distance between the center and one point

• Equal to the distance between the two points

What do the intersections of the circles represent?

• Points equidistant from the angle

• Points equidistant from the rays

• Points equidistant from the two points

• Points equidistant from the center

Tags

CCSS.HSG.CO.C.9

How can we prove that the constructed line is the angle bisector?

• By using a protractor

• By showing the triangles are congruent

• By drawing another line

• By measuring the angles

Tags

CCSS.HSG.CO.C.9

What do the two triangles formed by the angle bisector share?

• The same angle

• The same line

• The same height

• The same base

Tags

CCSS.HSG.CO.C.9

What can be concluded if the two triangles are congruent?

• The angles are different

• The angles are equal

• The angles are complementary

• The angles are supplementary

Tags

CCSS.8.G.A.2