Geometry Vocab

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Across
  1. 3. a triangle in which two sides have the same length. Two sides have the same measure but the other side is different or not congruent.
  2. 7. All three sides of a triangle have different lengths and measures. All of the sides are unique and different.
  3. 10. a line that passes through two lines in the same plane at two distinct points. Transversals play a role in establishing whether two or more other lines in the Euclidean plane are parallel.
  4. 11. used to find the equation of the straight line which is inclined at a given angle to the x-axis and passes through a given point. The equation is (y-y1)=m(x-x1).
  5. 15. The theorem that the sum of the squares on the legs of a right triangle is equal to the square on the hypotenuse. The equation for this is a^2+b^2=c^2.
  6. 16. This means that a shape, line, or figure has the same exact measure, shape, and size. The lines are identical in measure.
  7. 17. polygon that has all interior angles that are congruent. All of the angles have the same measure.
  8. 19. Algebraic expression that gives the distances between pairs of points in terms of their coordinates. This formula is based off of the pythagorean theorem.
  9. 20. a type of transformation that takes each point in a figure and slides it the same distance in the same direction. It doesnt rotate, flip, or change the size of the figure
Down
  1. 1. a transformation representing a flip of a figure. The figure is a mirrored image of itself once it is flipped
  2. 2. a line that intersects another line segment perpendicularly and divides it into two parts of equal measurement. It splits the line segment directly in half which creates two congruent halves.
  3. 4. the longest side of a right triangle, opposite the right angle. In the pythagoream theorem this represents c^2.
  4. 5. coplanar straight lines that do not intersect at any point. They are always the same distance apart from each other.
  5. 6. the equation of a straight line in the form y = mx + b where m is the slope of the line and b is its y-intercept. It emphasis the slope and the y intercept on the line.
  6. 8. All sides or faces of a triangle are congruent. All of the sides and faces have the same measure.
  7. 9. a type of transformation that takes each point in a figure and rotates it a certain number of degrees around a given point. The rotation goes in a circular rotation around the point.
  8. 12. the formula to find the center point of a straight line, using the coordinates of its endpoints. The equation is ((x2+x1)/2),((y2+y1)/2 )
  9. 13. an angle that measures between 90° and 0°, meaning it is smaller than a right angle. They can be found in triangles.
  10. 14. lines that intersect at a right (90 degrees) angle. These can be found everywhere. For example a four way intersection
  11. 18. a type of angle that is always larger than 90° but less than 180°. In other words, it lies between 90° and 180°.