Oscar Kimzey

1. Verticle angles formed by two intersecting lines.

The verticle angles are in the picture frame. They are all Xs, and any X-like shape is a verticle angle formed by two intersecting lines.

2. An acute angle.

All acute angles are less than 90 degrees. This angle, shown by the two poles, is definitely not right, nor is it larger than right (obtuse). Therefore, it must be acute.

3. A right angle.

The right angle is in the turquoise corner where the wall and celing meet. It is right because it forms a 90 degree angle (the definition of a right angle) and forms the corner of a rectangular wall, whose angles are always 90 degrees.

4. An obtuse angle.

The angle is in the shadow of the chair that I am pointing at. This angle is obtuse because it shows an angle that is larger than a right angle, and any angle that is larger than a right angle and smaller than a straight line/angle is obtuse. The measure must be above 90 degrees and under 180 degrees.

5. A linear pair.

Linear pairs are two supplementary adjacent angles formed by two intersecting lines. This is a linear pair because supplementary means two angles that come together to form 180 degrees (a straight line). The two angles in this picture do that. The angles should also be attatched on one line, which they are.

6. Complementary adjacent angles fomed by two intersecting lines.

Complementary adjacent angles fomed by two intersecting lines are two angles that attach on one side and add up to be 90 degrees. These two angles (circled) do just that, and the line where they attach is bisecting the 90 degree angle.

7. Parallel lines with NO transversial.

Parallel lines without a transversial must NEVER cross. The two lines on the trophy will never cross. They both go in the same direction, but a few centimeters away from each other.

8. Parallel lines with a perpendicular transversal.

Parallel lines with a perpendicular transversal form 90 degree angles and look like the letter H or the letter I. The figures in this gate look like the letter H, showing that they are parallel lines with a perpendicular transversal.

9. Parallel lines with a non-perpendicular transversal.

Parallel lines with a non-perpendicular transversal are like parallel lines with a perpendicular transversal, except the transversial is not horizontal or vertical. The section of this artwork that is circled shows an example of parallel lines with a non-perpendicular transversal.

11. Two perpendicular bisecting line segments.

When two line segments are pependicular and bisecting, they will make a + shape. The section of this bookshelf that I am pointing at is in a + shape (as is the one above it) so the two segments that form it (the horizontal and vertical lines) are perpendicular and bisecting.

10. Two non-perpendicular, non-bisecting, intersecting line segments.

Two non-perpendicular, non-bisecting, intersecting line segments are essentially an acute or obtuse angle. My cat's ear is an acute (get it - a cute?) angle. Therefore, it is a pair of non-perpendicular, non-bisecting, intersecting line segments.

12. Two non-perpendicular, bisecting line segments.

An example of two non-perpendicular, bisecting line segments is an acute or obtuse angle that is bisected by a line, line segment, or ray. The chicken's foot in this picture is an acute angle that is bisected by a ray. If that is true, then it must be an example of two non-perpendicular, bisecting line segments.

**The End**