Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
33 Cards in this Set
- Front
- Back
|
PARALLELOGRAM
|
A quadrilateral with 2 pair of parallel sides.
|
|
|
RHOMBUS
|
A parallelogram with all sides congruent.
|
|
|
RECTANGLE
|
A parallelogram with 4 congruent (90 degree) angles.
|
|
|
HEPTAGON
|
A polygon with 7 sides.
|
|
|
SQUARE
|
A parallelogram with all sides and all angles congruent. It is both a rectangle and a rhombus.
|
|
|
OCTAGON
|
A polygon with 8 sides.
|
|
|
TRAPEZOID
|
A quadrilateral with one pair of parallel sides.
|
|
|
ISOSCELES TRAPEZOID
|
A trapezoid with one pair of congruent sides.
|
|
|
POLYGON
|
A closed figure with straight sides.
|
|
|
AREA OF A TRIANGLE
|
One-half of base times height
A = (bh)/2 |
|
|
TRIANGLE
|
A 3 sided polygon.
|
|
|
OBTUSE ANGLE
|
An angle greater than 90 degrees and less than 180 degrees.
|
|
|
VERTICAL ANGLES
|
Two angles which share a common vertex and are opposite each other. Vertical angles are congruent.
|
|
|
RIGHT ANGLE
|
An angle of 90 degrees
|
|
|
SUPPLEMENTARY ANGLES
|
Two angles whose measures sum to 180 degrees.
|
|
|
ACUTE ANGLE
|
An angle of less than 90 degrees
|
|
|
COMPLEMENTARY ANGLES
|
Two angles whose measures sum to 90 degrees.
|
|
|
REFLEX ANGLE
|
An angle greater than 180 degrees and less than 360 degrees.
|
|
|
STRAIGHT ANGLE
|
An angle of 180 degrees.
|
|
|
RIGHT TRIANGLE
|
A triangle with one 90 degree angle.
|
|
|
DECAGON
|
A polygon with 10 sides.
|
|
|
NONAGON
|
A polygon with 9 sides.
|
|
|
TOTAL NUMBER OF DEGREES IN A POLYGON.
|
Number of degrees = 180 times the number of sides minus 2.
d = 180(s-2) |
|
|
PENTAGON
|
A polygon with 5 sides.
|
|
|
ISOSCELES TRIANGLE
|
A triangle with at least two congruent sides.
|
|
|
SCALENE TRIANGLE
|
A triangle with no congruent sides or angles.
|
|
|
OBTUSE TRIANGLE
|
A triangle with one angle greater than 90 degrees.
|
|
|
ACUTE TRIANGLE
|
A triangle with all angles less than 90 degrees.
|
|
|
EQUILATERAL TRIANGLE
|
A triangle with all sides and all angles congruent.
|
|
|
QUADRILATERAL
|
A 4 sided polygon.
|
|
|
HEXAGON
|
A polygon with 6 sides.
|
|
|
KITE
|
A quadrilateral with two pair of congruent sides and no sides parallel.
|
|
|
DODECAGON
|
A polygon with 12 sides.
|
