Lines
a straight path of points that goes on and on in opposite directions
What is a line?
two intersecting lines that form right angles
What is a perpendicular line?
having the same size and same shape
What is congruent?
a figure formed by two rays that have the same endpoint
What is an Angle?
a unit of measure for angles
What is degree?
a part of a line described by its two endpoints
What is a line segment?
lines that are the distance apart and will never cross
What is a parallel line?
all sides of a polygon have the same length
What is equilateral?
an angle that measures less than 90 degrees
What is an acute angle?
a tool used to measure and draw angles
What is a protractor?
an exact location in space
What is a point?
when two or more lines cross each other in a plane
What is intersecting lines?
a triangle with at least two congruent sides and two congruent angles
What is an isosceles triangle?
an angle that measures 90 degrees
the point where two or more edges, line segments or rays meet
What is a vertex?
a part of a line that has one endpoint and continues endlessly in one direction
What is a Ray
How many parallel lines does a square have?
What is 2?
a triangle without congruent sides and angles
What is a scalene triangle?
an angle that measures greater than 90 degrees and less than 180 degrees
What is an obtuse angle?
two angles whose degree measures have a sum of 90 degrees
What is complementary angles?
a line on which a figure can be folded so that both parts match exactly
What is line of symmetry?
How many perpendicular lines does a square have?
What is 4?
What type of triangle has three equal sides?
What is an equilateral triangle?
angles that have a common side and vertex
What is an adjacent angle?
two angles whose degree measures have a sum of 180 degrees
What is supplementary angles?