Lines, lines, lines!
This type of line has one end point and goes on forever in one direction.
a ray
This polygon has 5 sides.
pentagon
This triangle has 3 angles that are acute and all 3 sides are the same length.
equilateral triangle
This quadrilateral has all sides the same length and 4 right angles,
a square
This angle is exactly 90 degrees.
a right angle
This is a piece of a line, and shown with one end point at both ends.
a line segment
This polygon is an 8 sided figure.
octagon
This triangle has one right angle.
Right triangle
This quadrilateral has 4 sides that are the same length but no right angles.
a rhombus
This angle is less than 90 degrees.
an acute angle
This is a straight line that continues on forever in both directions.
a line
This is a 3 sided polygon.
triangle
This triangle contains 3 sides that are all different lengths.
Scalene triangle
This quadrilateral has exactly one set of parallel sides.
a trapezoid
This angle is greater than 90 degrees but less than 180 degrees.
obtuse angle
This is a set of lines that are evenly spread apart and will never ever run into or touch each other.
parallel lines
This is a 6 sided polygon.
Hexagon
This triangle has exactly 2 sides that are the same length.
Isosceles triangle
This quadrilateral has 2 sets of parallel sides, opposite sides are of equal length and 4 right angles.
a rectangle
an equilateral triangle contains 3 of these types of angles
acute angles
These lines intersect at a right angle.
perpendicular lines
What two things are true about polygons?
1. they have no curves
2. they are closed figures
A scalene triangle has one angle that is ______.
obtuse
this quadrilateral is characterized by 2 sets of parallel sides alone.
A rectangle contains 4 of these kinds of angles.
right angles