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this is pointing to a "point" on the map, showing where a spefic "point" or place is located

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A line is a set of points that extends infinitely in both directions just like how the train track is stretching into the distance

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an acute angle is 90 degrees just like the angle that is being formed by the ladder and the ground

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a picture of an open book with its pages forming an angle greater than 90 degrees

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since the 2 walls meet here it is exactly 90 degrees

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opposite angles formed when two lines intersect just like the x

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a straight angle is 180 degrees, forming a straight line just like the balance beam

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we can see that the 2 triangles on the left and right are congruent and have the same measure

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supplementary Angles that also form a linear pair 

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supplementary Angles that also form a linear pair 

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supplementary angles add up to 180 degrees and form a straight lime just like the cross

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adjacent angles share a common vertex and side just like the 2 pages of the book side by side

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an angle bisector cuts an angle into 2 congruent angels just like the compass does

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parallel lines remain an equal distance from one another and do not intersect just like these power lines

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a rectangle is a four sided polygon with opposite side of equal length and all the angles are right angles just like the peice of paper

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a square is a four sided polygon with all sides equal length and all the angles are right angles like the squares in this picture

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a triangle is a three sided polygon just like this triangular road sign

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a circle is a closed curve where all points are an equal distance from the center just like the lines are from the center of the bike

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the perimeter is the distance around the boundary of a shape or an object and we can see the perimeter of the small garden by looking at the white fence around it

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complementary angles add up to 90 degrees just like how the hour and the minute hand are at 90 degrees