Page 11 - FLIP BOOK_TASYA NATALI SIHOMBING
P. 11
A parallelogram is a quadrilateral with pairs of parallel sides, or a
quadrilateral that has exactly two pairs of parallel sides.
Look at the following picture and discuss with your friends how a
parallelogram is obtained from a rectangle.
Picture 1.4
The picture above shows that the ladder can be obtained from a
rectangular rectangle into two wakes with one of the shapes of the sharing.
(ii) and then the shaded shaded to be shifted so that it is obtained by
building a ladder (III). To be more convincing, try to make the picture
above using paper and pay attention to the length of the sides and the
magnitude of the corners! Based on the process of forming a ladder in
advance, the following properties of the level.
1. The sides facing a parallel and equal length, namely AB//CD, AD// BC ,
AB = DC, dan AD = BC. Why? Tell!
Picture 1.4
2. The opposite angles are the same measure, i.e A = C dan B = D.
Why? Tell!
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