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21 Cards in this Set
 Front
 Back
Obtuse angle

greater than 90degrees but less than 180 degrees.


Triangles

3 Sides
3 Angles 

Congruent Angles

Same Mesures.


Vertical

A line that goes up and down.


Point

A point has no size or location


Line

A line continues without end in the opposite direction.


Segment

A segment is a part of a lineit has 2 ends


Plane

A plane is a flat surface extends inefinitely in 4 directions.


Horizontal

A line that goes side to side


Transversal

A line intersecting 2 paralle lines creating 8 angles
** Inerior Angles ** Exterior Angle 

Collinear

A line can be drawen through a set of points


Straight Angle

180 degrees


Supplemtary Angle

2 angles whose mersurs add up to be 180 degrees.


Noncollinear

No line can be drawen through a set of points.


Ray

A ray is another part of a line it has only 1 end point and other sides keep going.


Skew lines

They do not lie in the same plan, they are not paralle, nor do they intersect.


Paralle lines/ segments

They lie in the same plane.


Acute Angle

less than 90 degrees.


Angle

An angle is made up of 2 rays witha common end point.


Right Angle

90 degrees.


Complementary angles

2 angles whose measuse adds up to be 90 degrees.
