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The ideas in this geometry lesson are taken from the Geometry ebook that I sell at MathMammoth.com. This lesson plan does not contain all the problems the Geometry ebook does. Parallel and perpendicular lines
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Two lines or line segments can either intersect (cross) each other or be parallel.
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1. Calculate the other angles inside the parallelogram. Do not measure since the pictures are not exact. What are the principles you can use?
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2. a) Draw a parallelogram that has a 50 angle. You can decide the length of the sides of the parallelogram. What else do you need to know to be able to draw the parallelogram?
b) Draw a parallelogram that has a 118 angle.
5. Find one corresponding angle to each of the marked angles and mark
them the same way.
These pictures do have some extra lines there too but remember you need to look
for two parallel lines and a line that intersects them both.
[Pictures available in the ebook]
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New terms to remember:
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