Math Test Flashcards

1
Q

Angle bisector

A

Cuts angle in half

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2
Q

Perpendicular bisector of a side

A

Bisects a side/creates a right angle

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3
Q

Median

A

Vertex to opposite midpoint

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4
Q

Mid segment

A

Connects midpoints of opposite sides of

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5
Q

Altitude

A

Height (vertex to opposite side, perpendicular)

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6
Q

Incenter

A

Intersection of the 3 angles

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7
Q

Circumcenter

A

Intersection of perpendicular bisectors

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8
Q

Orthocenter

A

Intersection of the 3 altitudes

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9
Q

Centroid

A

Intersection of the medians

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10
Q

Properties of the incenter

A

Center of inscribed circle, equidistant to all sides, cannot be outside of triangle

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11
Q

Properties of circumcenter

A

Center of circumscribed circle, radius=vertex to circumcenter, equidistant to all vertices, can be inside or outside

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12
Q

Properties of orthocenter

A

Can be inside or outside

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13
Q

Properties of centroid

A

Center if gravity, always inside triangle, medians divide triangle into two smaller triangles with equal area, 2/3 median from vertex

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14
Q

Sun of interior angles

A

180(n-2)

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15
Q

Measure of one interior angle

A

180(n-2)
————
2

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16
Q

Measure of one exterior angle/central angle

A

360/n

17
Q

Sum of exterior angles

A

360