Geometry vocabulary
a polygon with seven sides is called what?
a heptagon
if you were to classify a triangle by its angles, what are the three possible names?
obtuse, acute, and right
This has 3 equal sides
an equilateral triangle
A straight path of points that goes on and on in two directions
a line
a polygon with nine sides is called what?
a nonagon
This has 2 equal sides
an isosceles triangle
two lines that don't cross over, but form 90 degree angles
perpendicular lines
A quadrilateral with only one pair of parallel sides
a trapezoid
Lines that never intersect
parallel lines
This has no sides equal in length and no equal angles
a scalene triangle
A triangle with one angle that measures exactly 90 degrees
a right triangle
A quadrilateral with 2 pairs of parallel sides
What is a parallelogram, square, rhombus, or rectangle.
Lines that pass through/cross the same point and can form a variety of angles
intersecting lines
A triangle that has one angle that is more than 90 degrees
an obtuse angle
A quadrilateral that has opposite sides that are parallel and all of its sides are the same length but does not form 90 degree angles
a rhombus
if you were to classify a triangle by its sides, what are the three possible side names?
scalene, isosceles, and equilateral