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The line in the middle of the leaf is the angle bisector because it splits it in half.

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This building has congruent angles because they all have the same shape and size.

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This sea saw is a straight angle because it adds up to 180 degrees.

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There are vertical angles on this sign because they all have the same measures across from each other.

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The distance around this football field is the perimeter.

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There are adjacent lines here because they both have a common side.

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These lines created a postulate 1-2 because they intersected creating one point.

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This 3d X is a postulate 1-3 because two planes intersected creating one point.

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This ice cream cone has an acute angle because it is less than 90 degrees.

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The angle of this roof is obtuse because it is more than 90 degrees.

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This bicycle wheel has a midpoint in the middle because that dot is the half way point.

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This capital L has a right angle because the angle is exactly 90 degrees.

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The lines in the swimming pool are parallel lines because they are lines that do not intersect and are going in the same directions.

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This ruler is a line because it is a straight path extending in two opposite directions.

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This box is a square because it has four equal sides with four right angles.

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This window is a rectangle because it has four straight sides with four right angles.

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This cheese piece is a triangle because it has three sides with three angles.

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This soccer ball is a circle because all outside points are equal to the mid point.