Unit 1 Flashcards
Two angles that add to 180 degrees.
Supplementary
Angles that add to 90 degrees.
Complementary.
Angles opposite to each other on a point.
Vertical angles.
What is the total of angles at a point?
360 degrees.
Corresponding angle
Two angles on the same spot of a transversal on two parallel lines
Alternate angles
On the opposite side of the transversal, are equal
Consecutive angles
On the same side of the transversal. Add to 180.
Linear pair angles
On the same side of parallel line, add to 180.
You can solve angles on auxiliary lines by…
Extending them!
How to find missing side length of triangle
1.) Subrtact knowns 2.) Add knowns 3.) other side length must be difference<side<sum
The sum of interior angles
(N-2)180= SUM
Each interior angle
((n-2)180)/n
Sum of exterior angles
360
Each exterior angle
360/n
