Geometry Flashcards
About this set
Created by:
mandyhenry on January 31, 2011
Subjects:
Description:
These cards will help you memorize your geometry dictionary.
Classes:
MTA - Geometry, Markowitz GEOMETRY - 8th period, Markowitz GEOMETRY - 6th period, Markowitz GEOMETRY -3rd period, D Birch, Geometry Glenville, Dr. Randle, 2012 (see more)
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47 terms
Terms | Definitions |
|---|---|
Square | 4 equal sides. 90 degree angles. |
Rectangle | quadrilateral. 90 degree angles. |
Quadrilateral | ![]() 4-sided polygon |
Perimeter | ![]() distance around a figure |
Area | ![]() number of square units it takes to cover a figure |
Base | bottom of a figure |
Height | ![]() the line that makes a 90 degree angle with the base |
Right Angle | ![]() 90 degree angle |
Triangle | ![]() 3-sided polygon |
Acute Triangle | ![]() 3-sided polygon, each angle is less than 90 degrees |
Obtuse triangle | ![]() 3-sided polygon, 1 angle greater than 90 degrees |
Right Triangle | ![]() 3-sided polygon. One 90 degree angle. |
Isosceles Triangle | ![]() 3-sided polygon. 2 congruent sides. |
Equilateral Triangle | ![]() 3-sided polygon. 3 congruent sides. 3 60 degree angles. |
Scalene Triangle | ![]() 3-sided polygon. No congruent sides |
Leg | ![]() the 2 sides that make the right angle in a right triangle |
Hypotenuse | side opposite the right angle in a right triangle |
hypotenuse | side opposite the right angle in a right triangle |
parallelogram | ![]() 4-sided quadrilateral. 2 pairs of parallel lines |
parallel lines | ![]() lines that will never intersect |
trapezoid | ![]() 4-sided quadrilateral. 1 pair of parallel lines |
congruent | ![]() same size, same shape |
rhombus | ![]() 4 equal-sided polygon |
segment | ![]() line between two points |
vertex or vericies | ![]() the point where 2 lines meet |
polygon | many-sided figure, closed, straight line segment |
regular polygon | ![]() polygon with congruent sides and congruent angles |
irregular polygon | polygon without all congruent sides |
straight angle | ![]() angle measuring 180 degrees |
circle | ![]() infinite set of points equidistant from a centerpoint |
radius | ![]() half the diameter |
diameter | ![]() distance across a circle through the center point |
pi | ![]() ratio of circumference of a circle to its diameter, irrational; = 3.14 |
circumference | ![]() distance around a circle |
semi-circle | ![]() half of a circle |
inscribed | ![]() a figure drawn inside another |
circumscribed | ![]() a figure drawn within a circle |
complementary angles | ![]() angles whose sum equals 90 degrees |
Supplementary angles | ![]() angles whose sum equals 180 degrees |
interior angle | ![]() angles inside of a polygon |
exterior angle | ![]() angle made when you extend one of the sides of the polygon outside from the polygon |
regular polygon | ![]() a polygon with congruent sides and congruent angles |
pentagon | ![]() 5-sided polygon |
hexagon | ![]() 6-sided polygon |
heptagon | ![]() 7-sided polygon |
octagon | ![]() 8-sided polygon |
nonagon | ![]() 9-sided polygon |
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