PRESENTATION OUTLINE
Acute angle :
An angle smaller than a right angle ; 90 degrees
Obtuse angle :
An angle that measures more than a right angle ; 90 degrees
Right angle :
An angle that measures 90 degrees .
Straight angle :
An angle that measures 180 degrees
Vertical angle :
A pair of non-adjacent angles formed when two lines intersect.
Adjacent angle :
Two angles that have a common vertex and a common side .
Complementary angle:
Either of two angles whose sum is 90 degrees
Supplementary angles :
Either of two angles whose sum is 180 degrees
Corresponding angle :
Any pair of angles each of which is on the same side of one of two lines cut by a transversal and on the same side of the transversal.
Transversal :
Intersecting a system of lines.
Acute triangle :
All angles are less that right angles ; 90 degrees
Obtuse triangle :
One angle Is greater that a right angle . More than 90 degrees
Scalene triangle :
A triangle that has 3 unequal sides .
Isosceles triangle :
Only 2 sides of equal length .
Equilateral triangle :
All 3 sides are 60 degrees
