Unit 4 Vocabulary

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Across
  1. 1. a pair of angles that share a vertex and are both bounded by the same pair of lines but are opposite to each other.
  2. 5. the total area of the faces and curved surfaces of a solid figure.
  3. 9. the measure, in square units, of the interior region of a 2-dimensional figure.
  4. 10. two angles in a plane that have a common vertex and a common side.
  5. 11. if the sum of the measures of two angles is 180 degrees and/or the two angles form a straight line.
Down
  1. 2. having exactly the same size and shape.
  2. 3. a polygon with all sides the same length and all angels the same measure.
  3. 4. the distance around a circle, which equals a little more than three times its diameter.
  4. 6. a rectagular three-dimensional shape.
  5. 7. a shape made up of two or more simpler figures, such as triangles and quadrilaterals
  6. 8. lines that are always the same distance apart. They do not intersect.