# Topic 10

## Vocabulary

Vocabulary

### solid figure - a figure that has length, width, and height

solid figure - a figure that has length, width, and height

### rectangular prism - a solid figure with faces that are rectangles

rectangular prism - a solid figure with faces that are rectangles

### cube - a solid figure with six faces that are congruent squares

cube - a solid figure with six faces that are congruent squares

### pyramid - a solid figure whose base is a polygon and whose faces are triangles with a common point

pyramid - a solid figure whose base is a polygon and whose faces are triangles with a common point

### cylinder - a solid figure with two congruent circles as bases

cylinder - a solid figure with two congruent circles as bases

### cone - a solid figure with a circle as its base and a curved surface that meets at a point

cone - a solid figure with a circle as its base and a curved surface that meets at a point

### sphere - a solid figure in the shape of a ball

sphere - a solid figure in the shape of a ball

### face - a flat surface of a solid that does not roll

face - a flat surface of a solid that does not roll

### edge - a line segment where two faces of a solid figure meet

edge - a line segment where two faces of a solid figure meet

### vertex - the point where two rays meet to form an angle. The points where the sides of a polygon meet. The points where 3 or more edges meet in a solid figure that does not roll. The pointed part of a cone.

vertex - the point where two rays meet to form an angle. The points where the sides of a polygon meet. The points where 3 or more edges meet in a solid figure that does not roll. The pointed part of a cone.

### vertices - The points where the sides of a polygon meet. The points where 3 or more edges meet in a solid figure that does not roll. The pointed part of a cone.

vertices - The points where the sides of a polygon meet. The points where 3 or more edges meet in a solid figure that does not roll. The pointed part of a cone.

### point - an exact position often marked by a dot

point - an exact position often marked by a dot

### line - a straight path of points that is endless in both directions

line - a straight path of points that is endless in both directions

### triangle - a polygon with 3 sides

triangle - a polygon with 3 sides

### polygon - a closed figure made up of straight line segments

polygon - a closed figure made up of straight line segments

### side - a line segment forming part of a polygon

side - a line segment forming part of a polygon

### ray - a part of a line that has one endpoint and continues endlessly in one direction

ray - a part of a line that has one endpoint and continues endlessly in one direction

### angle - a figure formed by two rays that have the same endpoint

angle - a figure formed by two rays that have the same endpoint

### right angle - an angle that forms a square corner

right angle - an angle that forms a square corner

### octagon - a polygon with 8 sides

octagon - a polygon with 8 sides

### lines - more than one straight path of points that is endless in both directions

lines - more than one straight path of points that is endless in both directions

### acute angle - an angle that is open less than a right angle

acute angle - an angle that is open less than a right angle

### obtuse angle - an angle that is open more than a right angle

obtuse angle - an angle that is open more than a right angle

### parallel lines - lines that never intersect

parallel lines - lines that never intersect

### line segment - a part of a line that has two endpoints

line segment - a part of a line that has two endpoints

### quadrilateral - a polygon with 4 sides

quadrilateral - a polygon with 4 sides

### pentagon - a polygon with 5 sides

pentagon - a polygon with 5 sides

### hexagon - a polygon with 6 sides

hexagon - a polygon with 6 sides

### intersecting lines - lines that cross at one point

intersecting lines - lines that cross at one point

### vertex of a polygon - the point where two two rays meet to form an angle

vertex of a polygon - the point where two two rays meet to form an angle

### perpendicular - two lines that intersect to form right angles

perpendicular - two lines that intersect to form right angles

### equilateral triangle - a triangle with all sides the same length

equilateral triangle - a triangle with all sides the same length

### isosceles triangle - a triangle with at least two sides the same length

isosceles triangle - a triangle with at least two sides the same length

### scalene triangle - a triangle with no sides the same length

scalene triangle - a triangle with no sides the same length

### right triangle - a triangle with one right angle

right triangle - a triangle with one right angle

### acute triangle - a triangle with three acute triangles

acute triangle - a triangle with three acute triangles

### obtuse triangle - a triangle with one obtuse angle

obtuse triangle - a triangle with one obtuse angle

### trapezoid - a quadrilateral with only one pair of parallel sides

trapezoid - a quadrilateral with only one pair of parallel sides

### parallelogram - a quadrilateral in which opposite sides are parallel

parallelogram - a quadrilateral in which opposite sides are parallel

### rectangle - a quadrilateral with four right angles

rectangle - a quadrilateral with four right angles

### rhombus - a quadrilateral with opposite sides parallel and all sides the same length

rhombus - a quadrilateral with opposite sides parallel and all sides the same length

### square - a quadrilateral with four right angles and all sides the same length.

square - a quadrilateral with four right angles and all sides the same length.

## Skill Links

Skill Links