# Plane figures

## 20 terms

### trapezoid

a quadrilateral with only one pair of parallel sides

### scalene triangle

a triangle with no equal sides and no equal angles

### obtuse triangle

a triangle with one obtuse angle

### rectangle

a parallelogram with 4 right angles

### polygon

a figure which is made op of line segments called sides and is joined at endpoints called verticals

### square

a rectangle with 4 equal sides

### isosceles triangle

a triangle with two equal sides and two equal angles

### equilateral triangle

a triangle with all sides and all angles equal

### rhombus

a parallelogram with 4 equal sides

### parallelogram

a quadrilateral whose opposite sides are equal

a polygon with 4 sides

### right triangle

a triangle with one right angle

yes

yes

### vertex

a point in a prisim where three or more planes intersect

### net

a two-dimensional pattern of a three-dimensional figure

### polyhedron

a solid with all polygon faces.

### give an example of a polyhedron

cube, rectangular prism, triangular prism

### hypotenuse

The side across from the right angle in a right triangle. It is the longest side.

### legs

sides of right triangle that make right angle