Parallel/Transversals
What kind of angles are adjacent and whose sum is 180 degrees?
supplementary angles
A 3 sided figure is called?
Triangle
The angles in a quadrilateral add up to this many degrees...
What is 360
What is the measure of each interior angle in a square?
What is 90
Find the external angle of a triangle when the two non adjacent angles are 56 degrees and 78 degrees respectfully.
134 degrees
What kind of angles are congruent and in the same position on the same side of the transversal, one angle inside, one angle outside the parallel lines?
corresponding angles
Quadrilateral
The sum of angles in a pentagon add up to this many degrees...
What is 540
What is the measure of an interior angle of a pentagon
108 degrees
What is the external angle of a regular octagon?
45 degrees
What kind of angles are congruent outside of the parallel lines and are on opposite sides of the transversal?
Alternate exterior angles
The number of sides a decagon has
What is 10
The sum of angles in a decagon add up to this many degrees...
What is 1440
Each interior angle of a regular octagon has this many degrees...
What is 135
What is the missing non adjacent angle of a triangle if one angle is 90 degrees and the external angle is 138 degrees?
48 degrees
A pair of angles that are opposite each other and created by intersecting lines and are congruent?
Vertical
A 6 sided figure is called
hexagon
What is the formula to find the sum of interior angles?
s = 180(n-2)
The interior angles of a regular 18-sided polygon is this many degrees
What is 160
Find the exterior angle of a regular hexagon
60 degrees
Same side interior angles are?
Supplementary
How do we classify polygons?
By the number of sides!
The sum of angles in a nonagon add up to this many degrees...
What is 1260
Each interior angle of a regular 20-sided polygon is this many degrees
What is 162
Find the measure of the missing angle (x)of a heptagon when the other angles are as follow: 127*, 133*, 141*, 142*, 121*, 130* ?
106*