In geometry, a transversal is a line that passes through two lines in the same
plane at two ... that cuts two parallel lines at right angles is called a perpendicular
transversal. ... Further, if th...
As can be seen from the figure above, when two lines intersect, four angles are
formed. Each opposite pair are called vertical angles and are always congruent.
These names describe angles whether the lines involved are parallel or not
parallel. Remember that: ... If two parallel lines are cut by a transversal, the
alternate interior angles are congruent. ... Vertical angles are ALWAYS equal,
An angle is the intersection of two rays with a common endpoint. ... They are
always equal in measure. <1 and <3 are vertical angles. <2 and ... THEOREM:
Complements of the same angle, or congruent angles, are congruent.
They are defined as a pair of nonadjacent angles formed by only two intersecting
lines. They are known as 'Kissing Vs' and always have congruent measures.
Another special pair of angles is called supplementary angles. One angle is said
to be the ... Vertical angles always have equal measures. ?JKL and ?MKN are ...
Vertical angles are pairs of angles formed by two intersecting lines. ... in four
corresponding pairs that have the same measure, so therefore are congruent. ...
area between the two lines that are cut by the transversal, are called interior
When two parallel lines are cut by a third line, the third line is called the
transversal. In the example below, ... Recall that all pairs of vertical angles are
Since the sum of the angles of a triangle is always 180 degrees... y + z = 90
degrees. The two sides of the triangle that are by the right angle are called the
legs... ... all the sides are the same length (congruent) and all the angles are the
However, you can't always assume this when you're doing tricky geometry ... The
two angles touching the base (which are congruent, or equal) are called base ...