Polygons
A closed plane figure.
What is a polygon?
A quadrilateral with 4 right angles.
What is a rectangle?
A triangle in which there is one obuse angle.
What is an obtuse triangle?
An angle that is 180 degrees or a straight line.
What is a straight angle?
A part of a line that has two endpoints.
What is a line segment?
A polygon with 5 sides.
What is a pentagon?
A quadrilateral with 4 right angles and 4 sides of the same length.
What is a square?
A triangle in which there are three acute angles.
An angle that is greater than 90 degrees
What is an obtuse angle?
A part of a line that has one endpoint and continues endlessly in one direction.
What is a ray?
A polygon with 6 sides.
What is a hexagon?
A quadrilateal in which opposite sides are parallel.
A triangle that has all equal sides.
What is an equilateral triangle?
An angle that is less than 90 degrees.
What is an acute angle?
What are intersecting lines?
A polygon with 8 sides.
What is an octagon?
A quadrilateral in which opposite sides are parallel and all sides are the same length.
What is a rhombus?
A triangle in which no sides are equal.
What is a scalene triangle?
An angle measuring 90 degrees that makes a square corner.
What is a right angle?
In a plane, lines that never intersect.
What are parallel lines?
Each of the line segments of a polygon.
What are sides?
A quadrilateral with only one pair of parallel sides.
What is a trapezoid?
A triangle in which two sides are equal.
What is an isosceles triangle?
In a plane, lines that intersect forming right angles.
What are perpendicular lines?