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Geometry. By: Maurice Partner Teacher: Mrs. Minchew. Lines. A line is a collection of points along a straight path that goes on and on in opposite directions. A line has no endpoints. Angles.

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## Geometry

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**Geometry**By: Maurice Partner Teacher: Mrs. Minchew**Lines**• A line is a collection of points along a straight path that goes on and on in opposite directions. A line has no endpoints.**Angles**• Two angles whose measure in degrees adds up to 180 degrees are supplementary angles. An angle of 180 degrees is a straight angle and looks exactly like a line. In the picture, A and B are supplementary to one another.**Polygons**• A polygon is a closed figure with many sides. The lines of a polygon do not intersect.**Parallelograms**• A parallelogram has four sides and each pair is parallel.**Parallelograms**A parallelogram is a quadrilateral that has two pairs of opposite sides that are parallel and equal to one another. It differs from a rectangle in that its angles are not right angles. A rhombus is an equilateral parallelogram, with all sides equal. • .**Triangles**• A triangle is a polygon with three sides.**Right Triangles**• This triangle is a right triangle. It has one right angle. A right angle has a measurement of 90 degrees.**Congruence**• Congruent means that two figures will line up exactly if you put one on top of the other. They are identical in size and shape.**Circumference**• Circumference is the distance around an object.**Area**• Area is the amount of space inside a figure. To find area, you multiply two numbers together.**Area of a Parallelogram**• To find area of parallelogram, you multiply base times height.**Area of a Triangle**• To find the area of a triangle, multiply the base by the height, and then divide by 2.**Area of a Circle**• The area of a circle can be found by multiplying pi ¶ (which is equal to 3.14) by the square of the radius.**Find the area of a parallelogram with a base of 12**centimeters and a height of 5 centimeters.**Find the area of a rectangle with these measurements:**• Length = 12 • Width = 5

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