Lines and Points
Lines that go in the same direction and never meet
What are parallel lines?
An angle that measures more than 90 degrees
What is an obtuse angle?
A line that cuts through the center of the circle and goes from edge to edge.
What is the diameter?
A polygon with 5 sides
What is a pentagon
A triangle that has one 90 degree angle
What is a right triangle
It is the name of a line that crosses parallel lines
What is a transversal?
This type of angle measures 180 degrees
What is a straight angle?
The name for the distance around the outside of a circle
What is the perimeter?
A square is a special one of these, where all sides are equal
What is a rectangle?
This triangle has two acute angles and one obtuse angle
What is an obtuse triangle
They are angles that are formed across from each other when lines intersect
What are vertical angles?
These are angles that are formed by the F shapes formed with parallel lines and a transversal
What are supplementary angles?
A diameter cuts a circle into two halves or two of these
What are semi-circles?
This type of figure can be drawn with one set of parallel sides. The other two sides are not parallel
What is a trapezoid
A triangle with three equal sides
What are equilateral triangles?
This is the point where lines intersect
What is a vertex?
The measure of two adjacent angles are 63 degrees and 27 degrees. This word can be used to describe the sum of the angles.
What are complementary angles?
It is the formula for the area of a circle
What is pi(r^2)?
It is the sum of all the angles in a triangle
What is 180 degrees?
The third angle of a triangle with one 25 degree angle, and one 69 degree angle
What is 86 degrees?
These lines cross at 90 degrees to each other
What are perpendicular lines?
Angle 1 and 2 are adjacent and supplementary. If angle 2 is 35 degrees, this is the measure of angle 3.
What is 145 degrees?
This is one half of the diameter
What is the radius?
These are triangles that called isosceles
What is the name of a triangle with two equal sides?
If all angles of a triangle are congruent, this is the measure that each angle will have.
What is 60 degrees