Vertical Angles
More Alphabet Geometry:
Angles | Acute Angles | Right Angles | Obtuse Angles | Vertical Angles
Parallel and Perpendicular Lines | Transformations | Similar Letters
What can you learn by looking at the letter X?
When
you look at the letter X, you see two pairs of VERTICAL
ANGLES, or angles opposite each other when two lines cross.
|
Push the buttons to see the vertical angles:
Here is the other pair:
|
Vertical
Angles in Depth
Vertical
angles are CONGRUENT. That means they are the same
size. |
|
In the X above, angle 1 is congruent to angle 3, and angle 2 is congruent to angle 4. That means if the measure of angle 1 is 95º, then the measure of angle 3 is also 95º.
Angle 1 = Angle 3 & Angle 2 = Angle 4 |
Vertical
angles share the same VERTEX, or the point where two lines INTERSECT,
or meet. |
|
Angles
that are not vertical in the X are SUPPLEMENTARY angles, or angles
with measurements that add up to 180º. |
|
| More
Alphabet Geometry |
| Parallel and Perpendicular Lines
|