GEOMETRY
6.G.1
VOCABULARY
Mrs. Thompson
Level 1
Review Words
• Side: A line bounding a geometric figure: one of
the faces forming the outside of an object
• Vertex: On an angle or polygon, the point where
2 sides intersect
• Perimeter: the distance around a polygon
• Perpendicular: lines that intersect to form right
angles
• Parallel: Lines in a plane that do not intersect
• Congruent: having the same size and shape
Polygon
• A closed plane figure formed by 3 or
more line segments that intersect only
at their endpoints(vertices).
Examples
Non-Examples
Classify Polygons
Quadrilateral
• A Four(4) sided polygon
Example
Non-Example
Special Quadrilaterals
Triangles
Parts of shapes
Parts of a triangle defined
• Height: a perpendicular distance from the
base to the opposite vertex (or side in a
triangle)
• Leg: In a right triangle, the sides that
include the right angle; in an isosceles
triangle, the pair of congruent sides
• Base: a side of a polygon
• Hypotenuse: In a right triangle, the side
opposite the right angle
Need to know CONCEPTS
• Dimension: The length, width, or
height of an object
• Area: The number of square units
needed to cover a given surface
• Composing: to make or put
together
• Decomposing: to take apart