+
Related Flashcards
Cards In This Set
| Front | Back |
|
Define: Triangle
 |
A polygon with three sides and three vertices.
|
|
Define: Quadrilateral
 |
A triangle with four sides and four vertices.
|
|
Define: Polygon
|
Simple, closed, flat geometric figures whose sides are line segments.
|
|
Define: Obtuse Angle
 |
An angle greater than 90 degrees (right angle) but less than 180 degrees (straight angle).
 |
|
Define: Acute Angle
|
An angle less than 90 degrees (right angle).
 |
|
Define: Perpendicular Lines
|
Two lines which make square (90 degree) corners at the point of intersection.
|
|
Define: Straight Angle
|
Two right angles.
 |
|
Define: Right Triangle
 |
A triangle having a right (90 degree) angle.
|
|
Define: Acute Triangle
 |
A triangle in which all angles have a measure less than 90 degrees.
|
|
Define: Obtuse Triangle
 |
A triangle having one angle measuring greater than 90 degrees.
|
|
Define: Equiangular Triangle
 |
A triangle in which all angles have equal measures.
|
|
Define: Isosceles Triangle
("iso"=equal; "skelos"=leg) [at least]
![Define: Isosceles Triangle
("iso"=equal; "skelos"=leg) [at least]](https://t2.gstatic.com/images?q=tbn:xsbOcTgQ4gnTrM:http://upload.wikimedia.org/wikipedia/commons/thumb/e/ee/Isosceles-triangle.svg/300px-Isosceles-triangle.svg.png) |
A triangle which has at least two sides of equal length.
|
|
Define: Equilateral Triangle
 |
A triangle in which the lengths of all sides are equal.
|
|
Define: Scalene Triangle
 |
A triangle in which all three sides are different lengths.
|
|
Define: Parallelogram
 |
A quadrilateral that has two pairs of parallel sides.
|
