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Questions and Answers
What is the centroid of a triangle?
What is the centroid of a triangle?
What type of line is associated with the circumcenter?
What type of line is associated with the circumcenter?
Which point of concurrency is related to the altitudes of a triangle?
Which point of concurrency is related to the altitudes of a triangle?
What does the incenter of a triangle represent?
What does the incenter of a triangle represent?
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Which theorem states that a point is on the perpendicular bisector if it is equidistant from the endpoints of a segment?
Which theorem states that a point is on the perpendicular bisector if it is equidistant from the endpoints of a segment?
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How far from the vertex is the point of concurrency of the medians located?
How far from the vertex is the point of concurrency of the medians located?
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Which line type goes from the midpoint to midpoint in a triangle?
Which line type goes from the midpoint to midpoint in a triangle?
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What can be concluded about the circumcenter of a triangle?
What can be concluded about the circumcenter of a triangle?
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Flashcards
Point of concurrency
Point of concurrency
The point where three or more lines intersect.
Angle bisector
Angle bisector
A line that divides an angle into two equal angles.
Median
Median
A line segment that connects a vertex of a triangle to the midpoint of the opposite side.
Perpendicular bisector
Perpendicular bisector
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Centroid
Centroid
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Perpendicular bisector theorem
Perpendicular bisector theorem
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Angle bisector theorem
Angle bisector theorem
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Circumcenter
Circumcenter
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Study Notes
Triangle Centers and Lines
- Centroid: Intersection of medians; located 2/3 of the distance from each vertex to the midpoint of the opposite side. Used to find the center of mass.
- Incenter: Intersection of angle bisectors; equidistant from all three sides. Used to find the center of the inscribed circle.
- Circumcenter: Intersection of perpendicular bisectors; equidistant from all three vertices. Used to find the center of a circumscribed circle.
- Orthocenter: Intersection of altitudes; has unique properties related to the triangle's angles.
Types of Lines and Centers
- Median: Connects a vertex to the midpoint of the opposite side. Center: Centroid
- Altitude: Perpendicular segment from a vertex to the opposite side. Center: Orthocenter
- Perpendicular Bisector: Perpendicular to a side and through its midpoint. Center: Circumcenter
- Angle Bisector: Divides an angle into two equal angles. Center: Incenter
Theorems
- Perpendicular Bisector Theorem: A point on the perpendicular bisector of a segment is equidistant from the endpoints of the segment.
- Converse of Perpendicular Bisector Theorem: If a point is equidistant from the endpoints of a segment, then it is on the perpendicular bisector of the segment..
- Angle Bisector Theorem: A point on the angle bisector is equidistant from the sides of the angle.
- Converse of Angle Bisector Theorem: If a point is equidistant from the sides of an angle, then it is on the angle bisector.
Triangle Properties
- Concurrent Lines: Lines that intersect at a single point.
- Midsegment: Connects midpoints of two sides of a triangle.
- Acute Triangle: Altitude inside.
- Right Triangle: Altitude is a side.
- Obtuse Triangle: Altitude outside.
- Exterior Angle Theorem: Measure of an exterior angle is greater than either remote interior angle.
Point of Concurrency
- A point of concurrency is a point where three (or more) lines intersect.
Circumcenter specific
- The circumcenter is located on the hypotenuse of a right triangle.
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Description
Test your knowledge on triangle centers such as the centroid, incenter, circumcenter, and orthocenter. Understand the types of lines associated with these centers including medians, altitudes, and bisectors. Explore essential theorems that govern their properties and relationships.
