Basic Vocab
What is a polygon?
closed shape made only of straight lines
Polygon with 3 sides, angles and vertices
Triangle
What is a right angle
Angle measuring exactly 90 degrees
add all sides
Name an object that is an octagon you might see in the real world
Stop sign, etc
A circle is an example of...
a non-polygon
Polygon with 4 sides, angles and vertices
Quadrilateral
What is an acute angle?
Angle measuring less than 90 degrees
What is area?
The space inside a 2-D shape
When is a time you might need to find the perimeter in real life?
Teacher says....
What is a vertex?
A corner where 2 line segments meet
Polygon with 5 sides, angles and vertices
Pentagon
What is an obtuse angle?
Angle measuring more than 90 degrees
How do you calculate the area of a rectangle or square?
Multiply the length times the width
When is a time you might need to calculate the area of a space in real life?
What is the definition of the word congruent?
Same size, same shape
Polygon with 6 sides, angles and vertices
hexagon
What are parallel lines?
lines that are the same distance apart, never touching
How do you calculate volume?
What is the name of a 7 sided polygon?
heptagon
What is a regular polygon?
A polygon where all sides and angles are congruent
Polygon with 8 sides, angles and vertices
Octagon
What are perpendicular lines?
Lines that cross or touch at a right angle
What is volume?
The amount of space a 3-D shape takes up
When is a time you might need to figure out the volume of something in real life?
Teacher says...