Angles
a straight path that goes on forever
What is a line?
lines that cross each other at exactly one point
What are intersecting lines
a quadrilateral with at least one pair of parallel sides
What is a trapezoid?
an angle that measures greater than 0 and less than 90 degrees
What is an acute angle?
a part of a line that includes two endpoints and all the points between them
What is a line segment?
a quadrilateral with two pairs of parallel sides, two pairs of sides of equal length, and four right angles
What is a rectangle
an angle that is 90 degrees
What is a right angle?
an imaginary line on a shape about which the shape can be folded so that its two parts match exactly
What is the line of symmetry?
a quadrilateral with two pairs of parallel sides, four sides of equal length, and four right angles
What is a square?
an angle that measures greater than 90 degrees and less than 180 degrees
What is an obtuse angle?
segments that never intersect and are always the same distance apart
What are parallel line segments?
a quadrilateral whose opposite sides are parallel and of equal length
What is a parallelogram?