Polygons
What is a polygon?
A closed figure made of line segments
How many degrees are in a triangle?
180
opposite sides are both parallel and equal in length
parallelogram
3-dimensional shape with a circular base and 1 curved surface
cone
polygons that connect the bases of a polyhedron
lateral faces
How many sides does a hexagon have?
6
What is a scalene obtuse triangle?
All sides are different lengths and one angle bigger than 90 degrees but less than 180 degrees
4 congruent sides and 4 right angles
square
a solid figure that has two congruent polygons as its bases
prism
a three-dimensional figure with faces that are polygons
polyhedrons
octagon
What is a right triangle?
One right, or 90 degree, angle
4 congruent sides
rhombus
a solid shape with one curved surface and two congruent circular bases
cylinder
10-sided polygon
decagon
What is a 3-sided figure called?
triangle
What is an isosceles acute triangle?
Two sides are the same length and all angles are less than 90 degrees
at least one pair of parellel sides
a solid shape that is perfectly round like ball with no faces or base
sphere
7-sided polygon
heptagon
A polygon with congruent angles and equal sides
regular polygon
What is an equilateral triangle?
All sides are the same length
4 right angles
rectangle
a solid shape with a polygon as a base and triangular faces that come to a point
pyramid
9-sided polygon
nonagon