Geometry Ch 1 Vocabulary

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Across
  1. 2. Angle that is less than 90°
  2. 4. Adds up to 90
  3. 7. Angle that is a straight line; angle is 180°
  4. 8. Angle that is more than 90°
  5. 10. Adds up to 180
  6. 11. The middle point of a line; divides the line segment into two equal pieces; the average between two points
  7. 12. Angles across from each other; are =
  8. 14. Two lines that intersect and make a 90° angle
Down
  1. 1. ∠ABC + ∠CBD = ∠ABD; each part of the angle adds up to the entire angle
  2. 3. Angles that form a straight line; are supplementary
  3. 5. Cuts into two equal pieces
  4. 6. The end point of a shape or an angle (where two lines meet)
  5. 9. AB+BC=AC; on a line, each part of the line adds up to the whole line
  6. 13. Having the same shape and size (≅)