Download Geometry Vocabulary Test

Geometry Vocabulary
* Students should know the meaning of these geometry terms and also
be able to draw or identify pictures of these terms.
* Students will be tested on all of these terms.
Lines and Angles
vertex - point at which two rays meet to form an angle
perpendicular - lines that meet at a right angle
parallel - lines that are the same distance apart (will never cross)
midpoint - the halfway point on a line segment
line segment - a section of a line, has an endpoint on each end
line - a line that never ends, continues on in both directions
ray - a line beginning from a point
acute angle - an angle that measures less than 90 degrees
right angle - an angle that measures exactly at 90 degrees
obtuse - an angle that measures greater than 90 degrees
straight angle - an angle that measures 180 degrees
Polygons
regular polygon - two dimensional shape with equal sides and angles
irregular polygon - two dimensional shape with different lengths and
angles
quadrilateral - any four sided polygon
square - a quadrilateral with 4 equal sides and 4 right angles
rectangle - opposite sides are equal and all 4 angles are right angles
parallelogram - 2 pairs of parallel lines
rhombus - a shape with 4 equal sides but no right angles
trapezoid - a shape with 4 sides but only 1 set of parallel lines
pentagon - a five sided polygon
hexagon - a six sided polygon
heptagon - a seven sided polygon
octagon - an eight sided polygon
Circles and Triangles
circumference - the distance around a circle
radius - the distance from the center of a circle to the edge of a
circle
diameter - the distance across the circle, passing through the center
chord - a line segment connecting one point on a circle to another
point
equilateral - a triangle with all sides and angles equal
scalene - a triangle which no sides are the same length
isosceles - a triangle which has two sides the same length
 The following websites provide additional reinforcement of our
geometry skills.
http://www.math.com/practice/Geometry.html
http://www.aplusmath.com/cgi-bin/games/geomatho
http://www.bbc.co.uk/schools/ks2bitesize/maths/shape_space/shapes/play.shtml
http://www.aplusmath.com/cgi-bin/Flashcards/geoflash
http://www.proprofs.com/quiz-school/story.php?title=4th-grade-Geometry
http://www.tlsbooks.com/fourthgradeworksheets.htm
http://quizlet.com/76576/4th-grade-geometry-terms-flash-cards/