Straight: Without a curve. The point at which two sides of a two-dimensional figure or two edges of a three-dimensional figure meet. Wavy: Having curvy or undulating attributes e. Two-Dimensional Figures Circle : A two-dimensional shape in which all points on the curved line are equidistant from a center point. Triangle: A closed figure with three sides. Rectangle: A two-dimensional, closed, four-sided figure with four right angles.
Rhombus: A closed four-sided figure with parallel opposite sides. A square is a special kind of rhombus. Sometimes called a diamond. Square: A special type of rectangle that has equilateral same length sides and parallel opposite sides. Pentagon: A closed figure with five sides. Hexagon: A closed figure with six sides. Octagon: A closed figure with eight sides.
Three-Dimensional Figures Cube: A three-dimensional figure with identical equilateral squares as faces a cube is also a prism , see square prism below. Sphere: A round body whose surface is at all points equidistant from the center. Cone: A solid or hollow object that tapers from a circular or roughly circular base to a point. Pyramid: A three-dimensional figure on which the faces are triangular and converge to a single point at the top.
Pyramids are named after the shape of their base triangular pyramid, square pyramid, rectangular pyramid. Prism: A three-dimensional figure with identical ends. The measure of an inscribed angle equals one-half the measure of its arc. In a trapezoid, the nonparallel sides. Parallel lines never meet. Opposite angles are equal, and consecutive angles are supplementary.
The total length of all the sides. Equals approximately 3. If two lines intersect, they do so at a point. Triangle, quadrilateral, pentagon, and so on. Pythagorean theorem a theorem that applies to right triangles. For example, a regular pentagon has five equal angles and five equal sides. Base meets side at a right angle. Its opposite sides are parallel.
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