plane+and+solid+figures

=Plane and Solid Figures=

isosceles triangle- A triangle with exacly 2 congruent sides. scalene triangle- A triangle with no congruent sides. equilateral triangle- A triangle with 3 congruent sides. hypotenuse- In a right triangle,the side opposite the right angle;the longest side in a right triangle. leg- In a right triangle,either of the 2 sides that form the right angle. figurate numbers- Numbers that can be represented by geometric figures. triangular numbers- Numbers that can be represented by triangular figures. trapezoid- A quadrilateral with exactly 1 pair of parralel sides. parrallelagram- A quadrilateral whose opposite sides are parrallel and congruent. rhombus- A parallelogram with 4 congruent sides. transformation- A movement of a figure to a new position by translation,reflection,or rotation. translation- A movement of a figure to a new position along a straight line. reflection- A movement of a figure to a new position by flipping it over a line. rotation- A movement of a figure to a new position by turning it around a vertex ot point of rotation. tesselation- A repeating pattern of closed figures that covers a surface with no gaps and no overlaps. polyhedron- A solid figure with faces that are polygons. prism- A solid figure that has 2 congruent,polygon-shaped bases, and other faces that are all rectangles. base- A polygon's side or a solid figure's face by which the figure is mesured or named. pyramid- A solid figure with a polygon base in all other faces triangles that meet at a common vertex.