Exploring Angle Bisectors and Perpendicular Bisectors

The video tutorial covers the concepts of angle bisectors and perpendicular bisectors in geometry. It explains how a perpendicular bisector divides a line segment into two equal parts and is equidistant from the segment's endpoints. The tutorial also discusses the angle bisector theorem, which states that a point on the bisector of an angle is equidistant from the sides of the angle. Several examples are provided to illustrate these theorems, including solving for unknowns in geometric figures using these properties.

What is a perpendicular bisector?

• A line that cuts an angle in half

• A line that intersects another line at any angle

• A line that cuts another line in half and creates a right angle

• A line that is parallel to another line

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CCSS.HSG.CO.A.1

If a point is on the perpendicular bisector of a segment, what can be said about its distance from the segment's endpoints?

• It is farther from one endpoint

• It is not related to the endpoints

• It is equidistant from both endpoints

• It is closer to one endpoint

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CCSS.HSG.CO.C.9

In the given example, if MN equals 2.6, what is the length of NL?

• 1.3

• 2.6

• 5.2

• 3.9

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CCSS.HSG.CO.C.10

If BD equals 12, what is the length of DC?

• 24

• 12

• 18

• 6

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CCSS.HSG.CO.C.10

What is an angle bisector?

• A line that intersects another line at any angle

• A line that cuts another line in half

• A line that cuts an angle in half

• A line that is parallel to another line

Tags

CCSS.HSG.CO.C.9

If a point is on the angle bisector of an angle, what can be said about its distance from the sides of the angle?

• It is farther from one side

• It is equidistant from both sides

• It is not related to the sides

• It is closer to one side

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CCSS.HSG.C.A.3

If the measure of angle EFG is 50 degrees, what is the measure of angle EFH?

• 50 degrees

• 25 degrees

• 75 degrees

• 100 degrees

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CCSS.7.G.B.5

If 3a + 20 equals 2a + 26, what is the value of a?

• 12

• 6

• 3

• 9

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CCSS.3.MD.A.2

If the whole angle EFG is 2x + 17 and half of it is 4x + 3, what is the value of x?

• 1

• 2

• 3

• 4

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CCSS.7.G.B.5

If BD equals DC, and BD is 6, what is the value of x?

• 12

• 9

• 3

• 6

Tags

CCSS.HSG.CO.C.10