Regular Polygons
Regular polygons have all equal _____ and _____.
sides and angles
Two lines that look like the number 11 are called this.
parallel lines
What is the name of the angle that is less than 90 degrees.
acute
This shape has four equal sides and four equal angles.
square
This object has 6 square faces.
a cube
True or false: regular polygons can be open
false, they are closed figures made of straight lines
lines that cross at 90 degrees are called this:
perpendicular
An angle that is greater than 90 degrees, but less than 180 degrees is called what?
The name of this shape has three sides and three angles.
a triangle
This object has a square base and four triangular faces. It has 5 vertices.
a square based pyramid
True or false: a circle is a regular polygon.
false: it is not made of straight lines or angles
These lines cross each other at one point, just like a giant letter "X".
intersecting lines
Perpendicular lines always meet to form this specific kind of angle, which looks like the corner of a book.
a right angle
This perfectly round shape has no flat sides and no corners.
This perfectly round 3D shape looks like a basketball, a globe, or a marble.
a sphere
A stop sign is a regular version of this 8 sided shape.
an octogon
This capital letter is a perfect example of perpendicular lines because its vertical line meets its bottom horizontal line at a square corner.
the letter L (T, E, H, F)
A perfectly straight angle measures how many degrees?
180 degrees
Squares, rectangles, and trapezoids all belong to this family because they all have exactly 4 sides.
a quadrilateral
This shape has two circular bases (top and bottom) and looks like a can of soup or a AA battery.
a cylinder
A yellow honeycomb cell is shaped like this regular polygon with 6 sides.
The two long side-lines of a soccer field are an example of this type of line because they never cross.
Parallel lines
An angle is formed at this specific point where two intersecting lines meet.
The vertex? (Acceptable: What is the corner?)
If you draw a line straight through the middle of a shape so that both sides match perfectly like a mirror, you have found a line of this.
symmetry
A cube has this many pointy vertices (corners).
8