When two lines are intersected by a third line, if one pair of alternate interior angles formed is congruent, then the two lines are parallel to each other. Two pairs of such alter...
Alternate interior angles are created when a transversal intersects two lines. Each angle is inside the lines, but on opposite sides of the transversal.
If the lines are parallel then the alternate interior angles are equal to each other.
To help you remember: the angle pairs are on Alternate sides of the Transversal,
and they are on the Interior of the two crossed lines.
Alternate Interior Angles. more ... When two lines are crossed by another line (
which is called the Transversal), the pairs of angles • on opposite sides of the ...
Definition: As shown in the image, the two parallel lines are both intersected by another line. Likewise angle
2 and angle
3 are alternate angles
and share the same measure of degrees. In geometry, two angles
that lie on opposite sides and at opposite ends of a line t... More »
Alternate Interior Angles are created where a transversal crosses two (usually
parallel) lines. Each pair of these angles are inside the parallel lines, and on ...
In the drawing below, angles 3 and 6 are alternate interior angles, as are angles
4 and 5. Alternate interior angles are congruent. Formally, alternate interior ...
The Alternate Interior Angles Theorem states that, when two parallel lines are cut
by a transversal, the resulting alternate interior angles are congruent.
So what do I mean by alternate interior angles? Well, the interior angles are kind
of the angles that are; closer to each other in the two parallel lines, but they're ...
Time-saving video on how to identify alternate interior angles formed by a
transversal intersecting two parallel lines. Example problems applying alternate ...