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.
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.
An Isosceles Triangle has two congruent sides. The sides that are the same
length are called the legs. The other side is called the base. An Equilateral
Parallel Lines, and Pairs of Angles. Parallel Lines. Lines are parallel if they are
always the same distance apart (called "equidistant"), and will never meet.
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 ...
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
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 ...
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.