Geometry Creating Sensory Images. Your Task with Your Partner  Collect a poster paper, ruler, protractor, a thumb tack, and marker.  Hang the poster.

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Presentation transcript:

Geometry Creating Sensory Images

Your Task with Your Partner  Collect a poster paper, ruler, protractor, a thumb tack, and marker.  Hang the poster paper on the wall. Using your marker, divide it vertically down the middle.  On the left side of the poster, draw a large, scalene triangle. Label its vertices A, B, and C.  Face the board when finished.

Rotate, 1 Poster to the Right  Fold the paper on the vertical line.  Using the thumb tack, mark points A, B, and C so that the blank side of the paper is marked.  Unfold the paper. Use your marker to mark the holes on the blank side, and label them A’, B’, and C’, corresponding to the original side of the poster.  Use a straight edge to draw triangle A’B’C’.  Face the front when finished.

Rotate, 1 Poster to the Right  Use a ruler to draw segment AA’.  Measure the perpendicular distance in cm from A to the fold. Label the distance.  Measure the perpendicular distance in cm from A’ to the fold. Label the distance.  What do you notice?  Face the front when finished.

Rotate 1 Poster to the Right  Measure the angles formed by the fold the the segment AA’. Label the measures.  What do you notice?  Face the front when finished.

Rotate 1 Poster to the Right  Use a ruler to draw segment BB’.  Measure the perpendicular distance in cm from B to the fold. Label the distance.  Measure the perpendicular distance in cm from B’ to the fold. Label the distance.  What do you notice?  Face the front when finished.

Rotate 1 Poster to the Right  Measure the angles formed by the fold the the segment BB’. Label the measures.  What do you notice?  Face the front when finished.

Rotate 1 Poster to the Right  Use a ruler to draw segment CC’.  Measure the perpendicular distance in cm from C to the fold. Label the distance.  Measure the perpendicular distance in cm from C’ to the fold. Label the distance.  What do you notice?  Face the front when finished.

Rotate 1 Poster to the Right  Measure the angles formed by the fold the the segment CC’. Label the measures.  What do you notice?  Based upon what you’ve seen, make an inference. How is the reflection line related to the segment joining a point and its image? Write your inference at the bottom of the poster.  Return your supplies. Each of you pick up a problem sheet & piece of graph paper and return to your seats.

With your partner….  Complete the problem I assign to you on the graph paper. Be ready to explain to the class how using creating a sensory image helped you to answer the question.

Exit Slip  Individually complete the exit slip and hand it to me as you leave today.