Two and Three Dimensional Figures TwoDimensional Shapes Characteristics

Two- and Three- Dimensional Figures

Two-Dimensional Shapes Characteristics: flat, two dimensions (length & width) Examples: Three-Dimensional Solids Characteristics: three dimensions (length, width, & height) Examples:

Two-Dimensional Shapes Identify by the number of vertices and the number of sides. vertex side vertices (vertex): corner where the sides meet sides: line segments that connect end-to-end circle 0 sides triangle 3 sides quadrilateral pentagon 4 sides 5 sides hexagon 6 sides octagon 8 sides Which figure has 5 vertices? Which has a greater number of sides, a quadrilateral or a hexagon? Which figure has the fewest number of vertices, an octagon or a triangle?

Two-Dimensional Shapes Identify by the number of vertices and the number of sides. vertex side vertices (vertex): corner where the sides meet sides: line segments that connect end-to-end circle 0 sides triangle 3 sides quadrilateral pentagon 4 sides 5 sides hexagon 6 sides octagon 8 sides Which figure has 5 vertices? pentagon Which has a greater number of sides, a quadrilateral or a hexagon? hexagon Which figure has the fewest number of vertices, an octagon or a triangle? triangle

Special Triangles equilateral isosceles scalene 3 equal sides at least 2 equal sides 0 equal sides How are scalene and equilateral triangles alike? How are isosceles triangles and equilateral triangles different?

Special Triangles equilateral isosceles scalene 3 equal sides at least 2 equal sides 0 equal sides How are scalene and equilateral triangles alike? Both have 3 sides and 3 vertices, so they are both triangles. How are isosceles triangles and equilateral triangles different? An isosceles triangle can have a right angle, but an equilateral triangle cannot. An isosceles triangle has 2 equal sides, but an equilateral triangle has 3 equal sides.

Special Quadrilaterals parallelogram rectangle rhombus square trapezoid 2 pairs of parallel sides; 4 right angles 2 pairs of parallel sides; 4 equal sides 2 pairs of parallel sides; 4 right angles; 4 equal sides 1 pair of parallel sides How are rectangles and squares alike? How are rectangles and trapezoids different?

Special Quadrilaterals parallelogram rectangle rhombus square trapezoid 2 pairs of parallel sides; 4 right angles 2 pairs of parallel sides; 4 equal sides 2 pairs of parallel sides; 4 right angles; 4 equal sides 1 pair of parallel sides How are rectangles and squares alike? Both have 4 sides, 2 pairs of parallel sides, and 4 right angles. How are rectangles and trapezoids different? A rectangle has 2 pairs of parallel sides, while a trapezoid has only 1 pair.

Three-Dimensional Solids face Identify by faces, edges, and vertices. vertex edge cube 6 square faces cone circular base prism 2 congruent bases (any polygon); parallelogram faces cylinder 2 circular bases connected by a curved surface pyramid 1 base (any polygon); triangular faces meet at vertex sphere has a perfectly round, curved surface Which solid shown above has 5 vertices and 8 edges? Which solid has no faces, no edges, and no vertices? How are cones and cylinders alike?

Three-Dimensional Solids face Identify by faces, edges, and vertices. vertex edge cube 6 square faces cone circular base prism 2 congruent bases (any polygon); parallelogram faces cylinder 2 circular bases connected by a curved surface pyramid 1 base (any polygon); triangular faces meet at vertex sphere has a perfectly round, curved surface Which solid shown above has 5 vertices and 8 edges? pyramid Which solid has no faces, no edges, and no vertices? sphere How are cones and cylinders alike? both have circular bases

Choose 2 two-dimensional shapes and 2 three-dimensional solids. Describe each object. Explain how the objects are alike and different.

Copyright © 2009 Study. Island. com All rights reserved.