# Geometry-Chapter 6 Vocab.

## 17 terms

### base of a trapezoid

one of the two parallel sides of the trapezoid

### base angle of a trapezoid

one of a pair of consecutive angles whose common side is a base of the trapezoid

### concave

a polygon in which a diagonal can be drawn such that part of the diagonal contains points in the exterior of the polygon

### convex

a polygon in which no diagonal contains points in the exterior of the polygon

### diagonal

a segment that connects any two nonconsecutive vertices of a polygon

### isosceles trapezoid

a trapezoid in which the legs are congruent

### kite

a quadrilateral with exactly two pairs of congruent consecutive sides

### leg of a trapezoid

one of the two nonparallel sides of the trapezoid

### midsegment of a trapezoid

the segment whose endpoints are the midpoints of the legs of the trapezoid

### parallelogram

a quadrilateral with two pairs of parallel sides

### rectangle

a quadrilateral with four right angles

### regular polygon

a polygon that is both equilateral and equiangular

### rhombus

a quadrilateral with four congruent sides

### side of a polygon

one of the segments that forms a polygon

### square

a quadrilateral with four congruent sides and four right angles

### trapezoid

a quadrilateral with exactly one pair of parallel sides

### vertex of a polygon

the common endpoint of two sides of the polygon