Today’s Objectives    • You will learn to use geometry tools.    • You will learn to use a four step plan to solve problem...
straightedgeAn object used to draw astraight line, or to check if a lineis straight. It does NOT have tobe a ruler, just a...
Determine if the sides of the  triangle are straight.Use a straightedge to determinewhich of the three segments atthe uppe...
CompassA geometry tool used to draw arcs and circles.
You can use a compass to determine whichsegment is longer, AB or CD.
In Geometry, you will draw figures using only a compass and astraightedge. These drawings are called CONSTRUCTIONS. Youdo ...
The center of a line segment is called its MIDPOINT.                  You can use thin paper (patty paper) to find        ...
FORMULAAn equation that shows how certain quantitiesare related.
ParallelogramA quadrilateral with opposite sides parallel.
Geometry   geometry tools, perimeter, area
Geometry   geometry tools, perimeter, area
Geometry   geometry tools, perimeter, area
Geometry   geometry tools, perimeter, area
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Geometry geometry tools, perimeter, area

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Geometry geometry tools, perimeter, area

  1. 1. Today’s Objectives • You will learn to use geometry tools. • You will learn to use a four step plan to solve problems that involve the perimeter and area of rectangles and parallelogramsKey Vocabularystraightedge perimetercompass formulaconstruction areamidpoint Four-step plan
  2. 2. straightedgeAn object used to draw astraight line, or to check if a lineis straight. It does NOT have tobe a ruler, just an edge that isperfectly straight.
  3. 3. Determine if the sides of the triangle are straight.Use a straightedge to determinewhich of the three segments atthe upper left forms a straightline with the segment at thelower right.
  4. 4. CompassA geometry tool used to draw arcs and circles.
  5. 5. You can use a compass to determine whichsegment is longer, AB or CD.
  6. 6. In Geometry, you will draw figures using only a compass and astraightedge. These drawings are called CONSTRUCTIONS. Youdo not use any standard measurements when doing aconstruction.This is a construction of a six-sided figure.
  7. 7. The center of a line segment is called its MIDPOINT. You can use thin paper (patty paper) to find the midpoint of a line segment.
  8. 8. FORMULAAn equation that shows how certain quantitiesare related.
  9. 9. ParallelogramA quadrilateral with opposite sides parallel.
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