point
![card image](../uploads/756/12/559255a3_134f9c0c034__8000_00000034.png)
an exact location in space
acute angle
![card image](../uploads/33/33/_7fdcc103_1315e4af015__8000_00000012.png)
an angle that is less than 90 degrees and smaller than a right angle
Hexagon
![card image](../uploads/34/34/_7fdcc103_1315e4af015__8000_00000014.png)
a polygon with 6 sides and 6 vertices
intersecting lines
![card image](../uploads/757/13/559255a3_134f9c0c034__8000_00000035.png)
the 2 line segments cross each other at a point
parallel lines
![card image](../uploads/758/14/559255a3_134f9c0c034__8000_00000036.png)
lines that are equal distance apart at every point and they never intersect
The strips on the monarch caterpillar are parallel.
symmetric
symmetrical
lines of symmetry
![card image](../uploads/37/37/_7fdcc103_1315e4af015__8000_00000019.png)
a figure is symmetric if it can be folded into 2 congruent halves that fit on top of each other. The line of symmetry divides the valentine heart into 2 congruent shapes.
line
![card image](../uploads/759/15/559255a3_134f9c0c034__8000_00000037.png)
a straight path of points that goes on forever in both directions
plane
![card image](../uploads/726/81/559255a3_134f9c0c034__8000_00000009.png)
an endless flat surface
perpendicular lines
![card image](../uploads/760/16/559255a3_134f9c0c034__8000_00000038.png)
2 lines that intersect at a right angle
line segment
![card image](../uploads/761/17/559255a3_134f9c0c034__8000_00000039.png)
part of a line that has 2 end points
ray
![card image](../uploads/762/18/559255a3_134f9c0c034__8000_00000040.png)
part of a line that has 1 end point and extends forever in one direction
angle
![card image](../uploads/730/85/559255a3_134f9c0c034__8000_00000008.png)
a figure formed by 2 rays that have the same endpoint
right angle
![card image](../uploads/763/19/559255a3_134f9c0c034__8000_00000041.png)
an angle that measures exactly 90º
obtuse angle
![card image](../uploads/764/20/559255a3_134f9c0c034__8000_00000043.png)
and angle that measures more than 90º
straight angle
![card image](../uploads/765/21/559255a3_134f9c0c034__8000_00000044.png)
an angle that measures exactly 180º
polygon
![card image](../uploads/766/22/559255a3_134f9c0c034__8000_00000045.png)
a closed shape made up of line segments
side
![card image](../uploads/734/89/559255a3_134f9c0c034__8000_00000010.png)
each of the line segments of a polygon
vertex, vertices
![card image](../uploads/647/5/_45a4fd19_1424c52d682__8000_00000672.png)
the point where 2 rays meet to form an angle. the points where the sides of a polygon meet.
triangle
![card image](../uploads/768/24/559255a3_134f9c0c034__8000_00000047.png)
a polygon with 3 sides and 3 angles
quadrilateral
![card image](../uploads/769/25/559255a3_134f9c0c034__8000_00000048.png)
a polygon with 4 sides and 4 angles
pentagon
![card image](../uploads/770/26/559255a3_134f9c0c034__8000_00000049.png)
a polygon with 5 sides and 5 angles
octagon
![card image](../uploads/771/27/559255a3_134f9c0c034__8000_00000050.png)
a polygon with 8 sides and 8 angles
parallelogram
![card image](../uploads/736/91/559255a3_134f9c0c034__8000_00000012.png)
a quadrilateral in which the opposite sides are parallel
rectangle
![card image](../uploads/608/59/_18bf9882_13bf2e1fbc1__8000_00000068.png)
a parallelogram with 4 right angles
square
![card image](../uploads/609/60/_18bf9882_13bf2e1fbc1__8000_00000069.png)
a parallelogram with 4 right angles and all sides the same length
rhombus
![card image](../uploads/739/94/559255a3_134f9c0c034__8000_00000015.png)
a parallelogram with all sides the same length
trapezoid
![card image](../uploads/740/95/559255a3_134f9c0c034__8000_00000016.png)
a quadrilateral with only 1 pair of opposite sides that are parallel
equilateral triangle
![card image](../uploads/748/4/559255a3_134f9c0c034__8000_00000026.png)
a triangle with 3 equal sides
isosceles triangle
![card image](../uploads/749/5/559255a3_134f9c0c034__8000_00000027.png)
a triangle that has 2 equal sides
scalene triangle
![card image](../uploads/750/6/559255a3_134f9c0c034__8000_00000028.png)
a triangle that has no sides that as the same length
right triangle
![card image](../uploads/751/7/559255a3_134f9c0c034__8000_00000029.png)
a triangle with 1 right angle
acute triangle
![card image](../uploads/752/8/559255a3_134f9c0c034__8000_00000030.png)
a triangle with 3 acute angles
obtuse triangle
![card image](../uploads/753/9/559255a3_134f9c0c034__8000_00000031.png)
a triangle with one obtuse angle
congruent
![card image](../uploads/754/10/559255a3_134f9c0c034__8000_00000032.png)
2 shapes that are the same shape and the same size
similar
![card image](../uploads/755/11/559255a3_134f9c0c034__8000_00000033.png)
2 shapes that are the same shape but not the same size
classify
![card image](../uploads/610/61/_18bf9882_13bf2e1fbc1__8000_00000070.png)
To arrange in groups, by some property.
These shapes are classified by the number of sides.
ellipse
![card image](../uploads/612/63/_18bf9882_13bf2e1fbc1__8000_00000072.png)
a 2 dimensional shape that resembles a flatten circle
An ellipse has only 2 lines of symmetry
equiangular
![card image](../uploads/613/64/_18bf9882_13bf2e1fbc1__8000_00000073.png)
two dimensional
![card image](../uploads/618/69/_18bf9882_13bf2e1fbc1__8000_00000076.png)
a shape that has height and width but no depth, Squares, Circles, Triangles, etc are two dimensional objects
congruent polygons
![card image](../uploads/1189/19/_53022d86_13d85ffda7d__8000_00003040.png)
2 polygons that are the same shape and same size