Angles/Polygons/Triangles/Quadrilaterals

Types of Angl es/polyg

17 cards   |   Total Attempts: 188
  

Cards In This Set

Front Back
Define: Triangle Define: Triangle
A polygon with three sides and three vertices.
Define: Quadrilateral 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 Define: Obtuse Angle
An angle greater than 90 degrees (right angle) but less than 180 degrees (straight angle). An angle greater than 90 degrees (right angle) but less than 180 degrees (straight angle).
Define: Acute Angle Define: Acute Angle
An angle less than 90 degrees (right 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 Define: Straight Angle
Two right angles. Two right angles.
Define: Right Triangle Define: Right Triangle
A triangle having a right (90 degree) angle.
Define: Acute Triangle Define: Acute Triangle
A triangle in which all angles have a measure less than 90 degrees.
Define: Obtuse Triangle Define: Obtuse Triangle
A triangle having one angle measuring greater than 90 degrees.
Define: Equiangular Triangle 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]
A triangle which has at least two sides of equal length.
Define: Equilateral Triangle Define: Equilateral Triangle
A triangle in which the lengths of all sides are equal.
Define: Scalene Triangle Define: Scalene Triangle
A triangle in which all three sides are different lengths.
Define: Parallelogram Define: Parallelogram
A quadrilateral that has two pairs of parallel sides.