Lines
A ____________ extends endlessly in both directions.
line
An angle that measures 90 degrees.
right angle
Parallelograms are ALWAYS closed figures with four sides.
TRUE
The total sum of all 3 angles of a triangle will always add up to ______ degrees.
180
The __________ of a circle is another name for the perimeter of a circle.
circumference
A ___________ is a part of a line with two endpoints.
line segment
An angle that measures greater than 90 degrees
obtuse angle
True or False:
A trapezoid is a paralellogram
FALSE
A triangle with 3 different side lengths and 3 different angles is called a _________ _________.
Scalene Triangle.
A line that passes through center of a circle is called the __________.
Diameter
A ___________ is a part of a line with one end point, that goes on forever in the other direction
line segment
An angle that measures less than 90 degrees
acute angle
Which is NOT a quadrilateral?
Square
Trapezoid
Pentagon
Rectangle
Pentagon
The formula for an area of a triangle is ___________
Area of a triangle = 1/2 B x H
Half of a circles diameter is called the ________.
Radius
perpendicular lines
Complementary
A _______________ is a quadrilateral with opposite sides that are parallel.
Parallelogram
A triangle is an equilateral triangle if all side lengths are ________.
equal
360
____________ ____________ are two lines in the same plane that will never intersect
parallel lines
Two angles are __________ is their sum measures 180 degrees.
supplementary
answers vary
In a right triangle, the side length directly across from the 90 degree angles is called the ______________.
Hypotenuse
What is the formula for the circumference of a circle?
C = 2πr