Chapter Five Flashcards

1
Q

Concurrency of perpendicular bisectors of a triangle

A

The perpendicular bisectors of a triangle intersect at a point that is equidistant from the verticies of the triangle

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2
Q

Converse of the perpendicular bisectors theorem

A

In a plane If a point is equidistant from the end points of a segment, then it is on the perpendicular bisector

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3
Q

Perpendicular bisector theorem

A

In a plane if a point is on the perpendicular bisector of a segment the it is equidistant from the end points of the segment

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4
Q

Mid segment theorem

A

The segments connecting the midpoints of the two sides of a triangle is parallel to the third side and is half as long as that side

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5
Q

Angle bisector theorem

A

If a point is on the bisector of an angle then it is equidistant from the two sides of the angle (the ones at 90)

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6
Q

Converse of the angle bisector

A

If a point is in the interior of an angle and is equidistant from the sides of the angle then it lies on the bisector of an angle

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7
Q

Concurrency of angle bisectors of a triangle

A

The angle bisectors of a triangle intersect at a point that is equidistant from the sides of a triangle
(Three lines with the 90 degrees)

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8
Q

Concurrency of medians of a triangle

A

The medians of a triangle intersect at a point that is 2/3 of the distant from each vertex to the midpoint of the opposite side

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9
Q

Concurrency of altitudes of a triangle

A

The lines connecting the altitudes of a triangle are concurrent

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10
Q

Altitude

A

A perpendicular line segment connecting a side to its opposite vertex

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11
Q

Centroid

A

The point where all three medians intersect

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12
Q

Circumcenter

A

The point where all perpendicular bisectors intersect

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13
Q

Incenter

A

The point where all angle bisectors intersect

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14
Q

Median

A

A segment from a vertex to the midpoint of the opposite side

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15
Q

Orthocenter

A

The point where all three altitudes intersect

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16
Q

Perpendicular bisector

A

A line that is perpendicular to a segment at its midpoint

17
Q

Point of concurrency

A

The point where lines intersect

18
Q

Vertex

A

A point that joins two sides of a triangle

19
Q

Bisect

A

To divide into two congruent parts

20
Q

Angle bisector

A

A day that divides an angle into two angles that are congruent

21
Q

Is the circumcenter equidistant from all vertices

A

Yes

22
Q

Does a perpendicular bisector cuts through the midpoint of a segment

A

Yes

23
Q

Does a median cut through the midpoint of a segment

A

Yes

24
Q

Is a point on an angle bisector equidistant from two sides of the triangle

A

Yes

25
Q

Is t possible for a median altitude perpendicular bisector and an angle bisector to be all represented by the same line in a triangle

A

Yes

26
Q

Can any point of concurrency ever meet outside a triangle

A

No

27
Q

Is the centroid 2/3 distance from the vertex of the median

A

Yes

28
Q

Can altitudes from a vertex meet the opposite side at an angle other than 90

A

No

29
Q

Concurrency

A

Three or more lines that meet at a point