Unit 1 Naming Symbols Flashcards
Point
Location, Undefined term, Capital letter . A
Line
Made up of a point <–>
PQ
Perpendicular
Intersect <–> <–>
PQ T AB
Parallel
Do NOT intersect <–> = <–>
PQ AB
Skew
Line not on the same plane and do not intersect <-> <–>
PQ AB
COLLINEAR
Points on the same line P,Q,R are collinear
Non-Collinear
Not on the same line A,B, C are non-collinear
Line segment
Segment with point A and B — —-
AB BA
Ray
One point extend for infinity one direction —>
AB
Opposite rays
1 point + 2 lines expanding in opposite directions < ——–.——>
AC C CD
Bisector
Splits one angle into 2 congruent angles
Q
| / PT –> Bisects <QRP
R L/___ P PT
Congruent
They have the same angle measurements ~
Plane
Flat surface that extends to infinity ABC
Coplaner
On/In the same plane < A,B,C are coplaner
Non- Coplaner
Not on the same linear plane <D,B,C,C are not Coplaner
Adjacent Angles
2 angles on the same plane with same vertex and different interior <1 and <2 are adjacent
Vertical Angels
2 non adjacent angles created by 2 intersecting lines <1 and <2 are vertical
<3 and <4 are intersecting
Complimentary angles
2 angles that form 90degrees <1+<2=90*
Straight angles
Opposite ray w/ same vertex to make 180 degrees ——-0——- = 180* <KJP=180*
Linear pair
Angles together form 180* <AOB +< BOC + , DOC = 180*
Linear triple
2 adjacent angles = 180* <1+<2=180*
Angle Bisector
Line that divides into 2 congruent angles Ray –> Bisects <XYZ
WY