A line that goes up and down
vertical
A part of a line that has a start and end point
line segment
What is the name of a triangle where all three sides the same?
equilateral triangle
What do you call two lines that will never meet?
parallell
How we measure an angle
Degrees
A shape with four sides
quadrilateral
A line that goes from left to right
horizontal line
What is the name of the angle that is 180 degrees?
straight
What is the name of a triangle where two sides are equal?
isosceles triangle
A line that has a start, but no end
ray
What is the name of an angle that is less than 90 degrees?
acute
What is the name of an angle that is exactly 90 degrees?
right
What do you call two line that cross to form 90 degree angles?
perpendicular
What is the name of an angle that is more than 90 degrees?
obtuse
Lines that cross at any angle
intersecting
A shape with six sides
hexagon
What is the name of a triangle where all sides are different?
scalene triangle