Chapter 5 Flashcards

0
Q

Perpendicular bisector converse

A

If a point is equidistant from the end points of a segment than it lies on the perp bisector of the segment

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1
Q

Perpendicular bisector Thm

A

If a point is on the perpendicular bisector of a segment then it is equidistant from the endpoints of its segments

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2
Q

Angle bisector Thm

A

If a point is on a bisector of an angle then it is equidistant from the two sides of the triangle

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3
Q

Angle bisector converse

A

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

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4
Q

Distant between a point and a line

A

Is the length if the perp seg from the point of the line

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5
Q

Perpendicular bisector

A

A segment that is part of a perp bis of one of the sides

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6
Q

Angle bisector of a triangle

A

A segment that bisects one of the angles of the triangle

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7
Q

Median

A

A segment who’s endpoints are a vertex and the midpoint of the opposite side

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8
Q

Altitude

A

A segment from a vertex that is perpendicular to the opposite side or to the line containing the opposit side

*an altitude may lie outside or inside of a triangle

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9
Q

Concurrent

A

A set of lines that a single point of intersection

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10
Q

Circumcenter

A

A common point of the triangle o the perp bisector

*the circumvented is equidistant from the three vertices of a triangle

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11
Q

Incenter

A

Angle bisectors common point in a triangle

*the in center is equidistant from the three sides of the triangle

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12
Q

Centroid

A

The medians common point of a triangle

*the centriod is 2/3 the distance from the vertex to the midpoint of he opposite side

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13
Q

Orthocenter

A

Altitudes common point of a triangle

*no thms

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14
Q

The lines containing the perp bisector of a triangle are

A

Concurrent

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15
Q

The concurrent lines common point is the

A

Circumcenter of a triangle

16
Q

The circumcenter is ———– from the vertices

A

Equidistant

17
Q

The angle bisectors of a triangle are

A

Concurrent

18
Q

The Incenter is ———- from the triangles three sides

A

Equidistant

19
Q

The medians of a triangle are

A

Concurrent

20
Q

Common point =

A

Centroid

21
Q

Theorem 5.8

A

If one angle I a triangle is larger than another angle, Jen the opposite side the larger angle is longer then the side opposite the smaller angle

22
Q

Centroid is —/— each vertex the the ———- of the opposite side

A

2/3

Midpoint

23
Q

The lines containing he altitudes are

A

Concurrent

24
Q

Perpendicular bisector of a triangle

A

A segment that is part of a perpendicular bisectors of one of the sides

25
Q

Common point =

A

Orthocenter

26
Q

Midsegment

A

The segment thy connects the midpoints of two sides of a triangle

27
Q

Midsegment theorem

A

The segment connecting the midpoints of two sides of a triangle is parallel to the third side and is half it’s length

28
Q

Theorem 5.7

A

If one side of a triangle is longer than the other side, then the angle opposite the longer side is larger than the angle opposite I he shorter side

29
Q

Hinge theorem

A

If two sides one triangle are congruent to two sides of a second triangle, an the included angle of the first triangle is larger than the included angle of the second, than the included angle of the first is larger than the included angle of the second

30
Q

Converse of the hinge theorem

A

If two sides of one triangle are congruent to another triangle, ad the third side of the first is longer than the third side of the second, then the included angle of the first is larger than the included able if the secondhand

31
Q

Triangle inequality theorem 5.9

A

The sum of the lengths of any two sides of a triangle is greater the. The length of the third side