Angles & Lines
A acute angle
Less then 90 degrees
What is the value of Pi?
3.14
A polygon called with ten sides
A dodecagon
A triangle that has all sides the same length
a equilateral
the number of sides on a quadrilateral
lines that intersect to form a right angle
a perpendicular
What do we call the full distance across a circle?
Diameter
What is a polygon with four sides called?
quadrilateral
A triangle with two sides the same length
a isosceles
the number of degrees all angles of a quadrilateral will add up to
360 degrees
an angle that is greater than 90 degrees
a obtuse
What is half of the Diameter called?
Radius
What is a polygon with 5 sides called?
pentagon
A triangle with one angle greater than 90 degrees
a obtuse triangle
a quadrilateral with two pairs of opposite sides parallel and 4 right angles
a rectangle
the number of degrees in a straight angle
180 degrees
How do we find the circumference of a circle? Tell me the formula.
Diameter multiplied by Pi (3.14)
What is a polygon with 6 sides called?
hexagon
A triangle with a 90 degree angle and no sides the same length
What is right, scalene
a quadrilateral with two pairs of opposite sides parallel and all sides the same length. (it does not have to have right angles)
a rhombus
a closed figure with at least 3 sides
a polygon
How do we find the area of a circle? Tell me the formula.
Radius multiplied by the radius.
What is an 8 sided polygon called?
octagon
All angles in every triangle will add up to this number of degrees
a 180 degrees
a quadrilateral with only one pair of opposite sides parallel
a trapezoid