Lines
two lines that are the same distance apart and will never touch
parallel lines
This is the term for a 90 degree angle
a right angle
A triangle that has all sides the same length
an equilateral triangle
This is the number of sides on a quadrilateral
four
A shape that has 6 sides is called
a hexagon
lines that intersect to form a right angle
perpendicular lines
An angle that is less than 90 degrees
an acute angle
A triangle with two sides the same length
an isosceles triangle
This quadrilateral has two pairs of parallel lines, but not right angles and the opposite sides are the same length.
a parallelogram
A shape with 5 sides is called
a pentagon
this has one endpoint and continues in one direction forever
a ray
an angle that is greater than 90 degrees
an obtuse angle
A triangle with one angle greater than 90 degrees
an obtuse triangle
This is a quadrilateral with two pairs of opposite sides parallel and 4 right angles
a rectangle
This 3D figure has no faces, no edges, and no vertices
a sphere
This is part of a line
a line segment
this is the number of degrees in a straight angle
180 degrees
A triangle with no sides the same length
a scalene triangle
This is a quadrilateral with two pairs of opposite sides parallel and all sides the same length. (it does not have to have right angles)
a rhombus
This 3D figure has 5 faces, 8 edges, and 5 vertices. Hint: One face is a square
a pyramid
This is a closed figure with at least 3 sides.
a polygon
This is used to measure angles
a protractor
All angles in every triangle will add up to this number of degrees
180 degrees
This is a quadrilateral with only one pair of opposite sides parallel
a trapezoid
This 3D figure has two faces and no edges or vertices.
a cylinder