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what is this called?
- Point
- A POINT is represented by a dot.
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Define the word GEOMETRY
- The study of space (distance).
- Geometry is a branch of mathematics which involves the measuring of shapes. The word Geometry actually means "to measure the earth."
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What is this called?
- Line SegmentA LINE SEGMENT is represented by a group of points having tow endpoints. LINE SEGMENTS of the same length are congruent.
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What is this called?
- Line
- A LINE is represented by a group of points having no endpoints. A line extends indefinitely in two opposite directions.
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What is this called?
- Ray
- A RAY is represented by a group of points having one endpoint. A RAY extends indefinitely in one direction.
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What is this called?
- Angle
- An ANGLE is two rays that share a common endpoint. The common endpoint is called the vertex.
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What is this called?
- Intersecting Lines
- INTERSECTING LINES are lines that cross each other at some point.
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What are these lines called?
- Perpendicular Lines
- PERPENDICULAR LINES are intersecting lines that form four right angles.
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What is a PLANE?
A PLANE is represented by a smooth, flat surface that has no thickness and extends indefinitely in all directions.
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What are these lines called?
- Parallel Lines
- PARALLEL LINES are lines that never intersect.
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What are these shapes?
- Simple Closed Figures
- SIMPLE CLOSED FIGURES do not have a point of intersection.
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What are these shapes?
- Similar Figures
- SIMILAR FIGURES have the same shape but not the same size.
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What are these shapes?
- Congruent Figures
- CONGRUENT FIGURES have the same size and shape.
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What are these shapes?
- Polygons
- A POLYGON is a simple closed figure made up of line segments.
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what is this shape?
- Triangle
- A TRIANGLE is a polygon with 3 sides.
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What is this shape?
- Quadrilateral
- A QUADRILATERAL is a polygon with 4 sides.
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What is this shape?
- Parallelogram
- A PARALLELOGRAM is a quadrilateral having opposite sides which are parallel.
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What is this shape?
- Rectangle
- A RECTANGLE is a parallelogram having 4 right angles. The box in the corner means perpendicular lines forming a right angle.
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What is this shape?
- Square
- A SQUARE is a rectangle having 4 congruent sides. The double line segments on each side means they are congruent.
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What is this shape?
- Rhombus
- A RHOMBUS is a parallelogram having 4 congruent sides.
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What is this shape?
- Trapezoid
- A TRAPEZOID is a quadrilateral having only 2 sides that are parallel.
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What is this shape?
- Pentagon
- A PENTAGON is a polygon having 5 sides.
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What is this shape?
- Hexagon
- A HEXAGON is a polygon having 6 sides.
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What is this shape?
- Octagon
- A OCTAGON is a polygon having 8 sides.
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What is this shape?
- Heptagon
- A HEPTAGON is a polygon having 7 sides.
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What are the points called where the sides of the polygon meet? (point A, B, C or D)
Vertexes
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What is the line called that joins two opposite vertexes (line BD)?
- Diagonal
- A DIAGONAL is not a side.
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What is this shape?
- HeptagonA HEPTAGON is a polygon having 7 sides.
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What is this shape?
- Heptagon
- A HEPTAGON is a polygon having 7 sides.
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What is this shape?
- Hexagon
- A HEXAGON is a polygon having 6 sides.
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What is this shape?
- Hexagon
- A HEXAGON is a polygon having 6 sides.
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What is this shape?
- Octagon
- A OCTAGON is a polygon having 8 sides.
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What is this shape?
- Octagon
- A OCTAGON is a polygon having 8 sides.
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What is this shape?
- Pentagon
- A PENTAGON is a polygon having 5 sides.
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What is this shape?
- Pentagon
- A PENTAGON is a polygon having 5 sides.
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