Lines
Two lines that are the same distance apart and will never touch
Parallel lines
This is the term for a 90 degree angle
Right angle
A triangle that has all sides the same length
Equilateral Triangle
This is the number of sides on a quadrilateral
4
A shape that has 6 sides is called
Hexagon
Lines that intersect to form a right angle
Perpendicular Lines
An angle that is less than 90 degrees
Acute angle
A triangle with two sides the same length
Isosceles Triangle
This is the number of degrees all angles of a quadrilateral will add up to
360 degrees
A shape with 5 sides is called
Pentagon
This has one endpoint and continues in one direction forever
Ray
An angle that is greater than 90 degrees
Obtuse angle
A triangle with one angle greater than 90 degrees
Obtuse Triangle
This is a quadrilateral with two pairs of opposite sides parallel and 4 right angles
Rectangle
A right triangle has one angle that is 45 degrees. What is the measure of the 3rd angle
45 degrees
This is part of a line
Line Segment
This is the number of degrees in a straight angle
180 degrees
A triangle with a 90 degree angle and no sides of the same length
Right, Scalene Triangle
This is a quadrilateral with two pairs of opposite sides parallel and all sides the same length. (it does not have to have right angles)
Rhombus
A quadrilateral has 3 angles measuring 90 degrees, 100 degrees, and 70 degrees. What is the measure of the 4th angle?
100 degrees
This is a closed figure with at least 3 sides.
Polygon
This is used to measure angles
Protractor
All angles in every triangle will add up to this number of degrees
180 degrees
This is a quadrilateral with only one pair of opposite sides parallel
Trapezoid
A boat has a sail with one pair of perpendicular lines, and two sides the same length. What kind of triangle is it?
Right, Isosceles Triangle