Geometry
A figure has this when a line can divide it into two congruent parts
What is a line of symmetry?
Any polygon with exactly 4 sides
What is a quadrilateral?
A quadrilateral with only one pair of parallel sides
What is a trapezoid
Lines that never intersect
What are parallel lines
A triangle with one angle that measures exactly 90 degrees
What is a right triangle
A point where two or more lines come together; also called a corner on a polygon
What is a vertex? (Plural is vertices.)