Angles
What do you call a 90 deg angle?
Right angle
Triangle that has all sides the same length
equilateral
two lines that are the same distance apart and cannot touch whatsoever at all
parallel lines
The number of sides on a quadrilateral
4
A shape with 6 sides
hexagon
An angle that is less than 90 degrees
acute
A triangle with two sides the same length
isosceles
lines that intersect to form a right angle
perpendicular
The number of degrees all angles of a quadrilateral will add up to
360 degrees
Shape with 5 sides
Pentagon
n angle that is greater than 90 degrees
obtuse
Triangle with one angle greater than 90 degrees
obtuse triangle
What is the definition of a ray?
A line that has one endpoint and continues in one direction forever
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
The number of degrees in a straight angle
180
A triangle with a 90 degree angle and no sides the same length
Right or Scalene
What is a line segment?
Part of a line
This is a quadrilateral with two pairs of opposite sides parallel and all sides the same length
Rhombus
A quadrilateral has 3 angles measuring 90 degrees, 100 degrees, and 70 degrees. What is the measure of the 4th angle?
100
In real life, how would you measure an angle?
A protractor
All of the angles in a triangle mus add up to __
180 degrees
A a closed figure with at least 3 sides or more
polygon
A quadrilateral with only one pair of opposite sides parallel
Trapezoid
One pair of perpendicular lines, and two sides the same length. What kind of triangle??
Right or isosceles