Types of Lines
A set of lines that are always the same distance apart. These lines never cross.
Parallel Lines
any angle that measures less than 90 is called what?
Acute
Has 1 angle that is a right angle, exactly 90 is called what?
Right triangle
• 4 sides • 4 right angles • All sides are equal length is called what?
Square
a polygon that is 5 sided
Pentagon
A set of lines that intersect and form 90 angles.
Perpendicular Lines
any angle that measures greater than 90 is called what?
Obtuse
Has 3 angles that measure less than 90 is called what?
acute triangle
• 4 sides • 4 right angles • Opposite sides are equal is called what?
Rectangle
a polygon that is 6 sided
Hexagon
A set of lines that intersect at any point
Intersecting Lines
an angle that is exactly 90
Right angle
Has 1 angle that is greater than 90 is called what?
Obtuse triangle
• 4 sides • One pair of parallel lines is called what?
Trapezoid
a polygon that is 7 sided
Heptagon
A set of lines that intersects at 89 degrees
Intersecting lines
A angle that is 89.99 degrees
Acute triangle
Has no equal sides. All sides are different length is called what?
scalene triangle
• 4 sides • 2 pairs of parallel lines •Opposite sides & angles are congruent •2 acute & 2 obtuse angles is called what?
Parallelogram
a polygon that is 9 sided
Nonagon
A set of lines that intersects at 90.1 degrees
intersecting lines
a angle that is 275 degrees
Obtuse
Has two equal sides. These are represented by the lines on 2 of the sides is called what?
Isosceles Triangle
• 4 sides • All sides equal length • 2 pairs of parallel lines • Opposite angles are equal is called what?
Rhombus
a polygon that is 10 sided
Decagon