In geometry, a transversal is a line that passes through two lines in the same
plane at two ... cuts two parallel lines at right angles is called a perpendicular
transversal. ... Further, if the ang...
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.
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.
Jan 24, 2013 ... Explain why vertical angles must be congruent .... The non-adjacent angles are
called vertical or opposite . Also, each pair of adjacent angles ...
... to make an X, angles on opposite sides of the X are called vertical angles. ...
Vertical angles are congruent: If two angles are vertical angles, then they're ...
Finally, angle 3 and angle 6 are congruent vertical angles, so angle 6 must be
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.
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
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
Proving that vertical angles are equal. ... Identifying supplementary,
complementary, and vertical angles · Complementary ... Vertical angles are