Presentation on theme: "Polygons Two-dimensional shapes that have three or more sides made from straight lines. Examples: triangles squares rectangles."— Presentation transcript:
1 PolygonsTwo-dimensional shapes that have three or more sides made from straight lines.Examples:trianglessquaresrectangles
2 Sides The lines you can trace and count on the outside of a 2D shape. Example: A triangle has 3 sides. A square has 4.
3 ParallelogramA quadrilateral with parallel opposite sides of equal length.Opposite angles are equal.
4 QuadrilateralsAny two-dimensional shapes (polygon) with 4 straight sides and 4 anglesThe interior angles of a Quadrilateral add up to 360 degrees.Ex.rhombus kiterectangle trapezoidsquare
5 RectangleA 2D shape with 4 corners and 2 pairs of opposite, equal, parallel sides.The sides meet at right angles.
6 Rhombus A 2D, four-sided shape with opposite sides that are parallel. All the sides are the same length.
7 Rhombus A 2D, four-sided shape with opposite sides that are parallel. All the sides are the same length.Diagonals of a Rhombus bisect each other at right angles.
8 Trapezoid A 2D shape (polygon) with four sides. One pair of sides is parallel.
9 Trapezoid A 2D shape (polygon) with four sides. One pair of sides is parallel.
10 Square 2D shape (polygon) with 4 equal sides and 4 right (90°) angles. Opposite sides are parallel.
11 TriangleTwo-dimensional shape (polygon) with three straight sides and three angles.The interior angles of a triangle add up to 180 degrees.There areisosceles triangles,right trianglesequilateral trianglesscalene triangles
12 Isosceles TriangleA triangle with equal sides and 2 equal angles
13 Equilateral TriangleA triangle with equal sides and 3 equal angles.
14 Right TriangleA triangle with one right angle (90 degrees).
15 Scalene TrianglesA triangle with 3 different side lengths and 3 different angle measures.
16 CongruentTwo figures are congruent if they have the same shape and size.Two angles are congruent if they have the same measure.
17 Rectangular Prism A 3D shape that has: 6 rectangular faces 2 of those faces are equal12 edges8 verticesSome faces are parallelSome edges are parallelSome faces are perpendicularSome edges are perpendicular
18 PyramidA three-dimensional shape which has a polygon for its base and triangular faces which meet at one point (vertex).
19 CubeA three-dimensional shape which has 6 square faces all the same size, 12 edges and 8 vertices.Some faces parallelSome edges parallelSome faces perpendicularSome edges perpendicular
20 Line An infinitely long, thin, two-dimensional mark It has no endpoints.
21 Line Segment A section of line bounded by two endpoints. A line segment is not continuous.
22 IntersectingCrossing over one another.These lines are intersecting.
23 Parallel Lines that are the same distance apart from each other. These type of lines stay the same distance apart for their whole length. They do not need to be straight or the same length.They never intersect.
24 PerpendicularLines that intersect at a perfect right angle (90º) to one another.In solid shapes, edges could be at a right angle to one another.Faces could also be at right angles to one another.
25 AnglesA shape formed by two lines or rays that extend from a common point (vertex).The amount of turning between two lines that meet at a common point (vertex).
26 Vertex (angles)The common point between two or more rays or line segments.
27 Right AngleAn angle whose measure is exactly 90 degrees.
28 SymmetryAn object is symmetrical when you can fold it in half and the two halves are congruent.One half is a mirror image of the other.