Activity (Page 112)

Transcript

Activity (Page 112) Here is another activity for you to try. Take a square sheet of paper, fold it in the middle and unfold it. Fold the edges towards the centre line and unfold them. Fold the top right and bottom left corners onto the creased line to create triangles. Refer to Fig. 5.8. The triangles should not cross the crease lines. Are a, b and c parallel to p, q and r respectively? Why or why not? No, the lines are not parallel as described. Here is a breakdown for each pair: Are a and p parallel? No. Line a is part of the top edge of the square, and line p is part of the left edge of the square. Adjacent edges of a square are perpendicular, not parallel. Are b and q parallel? No. Line b is the diagonal crease from the fold. Line q is the edge of the paper that has been folded to lie along a vertical crease line. A diagonal line and a vertical line are not parallel. Are c and r parallel? No. Line c is the edge of the paper folded to lie along a vertical crease line. Line r is part of the bottom edge of the square, which is horizontal. A vertical line and a horizontal line are perpendicular, not parallel.