Other 1
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 equal sides and angles.
Equilateral
This is a shape that has four sides, with two of the sides being equal and next to each other.
Kite
What does the word "quadrilateral" literally mean?
4 lines
what word means to cut in half
bisect
An angle that is less than 90 degrees
Acute
A triangle with two equal sides and angles.
Isosceles
Do all quadrilaterals tesselate?
yes
an angle greater than 180 degrees
Reflex
an angle that is greater than 90 degrees, but less than 180 degrees
obtuse
What is the measure of every angle in an equilateral triangle (how many degrees) ?
60 degrees
This is a quadrilateral with two pairs of parallel sides and 4 right angles
Rectangle
A right-angled triangle has one angle that is 45 degrees. What is the measure of the 3rd angle
45 degrees
the direction when you turn to the left
anticlockwise
this is the number of degrees in a straight angle
180 degrees
A triangle with a 90 degree angle
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)
Rrhombus
A quadrilateral has 3 angles measuring 90 degrees, 100 degrees, and 70 degrees. What is the measure of the 4th angle?
100 degrees
If there is a triangle that has an angle of 110 degrees, and an angle of 15 degrees, how many degrees is the missing angle?
55 degrees
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?
Isosceles