Two or more adjacent angles with measures that add up to 90 degrees are...
Complementary angles
angles 1 and 5 are
What is corresponding angles?
assume ABC is 90, find DBC.
what is DBC = x = 10?
Find x
What is x=54?
find x
What is x = 30?
Two or more adjacent angles that form a straight line
What are supplementary angles?
angles 3 and 8 are
what is alternate interior angles?
Assume PR is a straight line, find PQS
What is PQS = m = 65?
Find angle ABC
What is x = 69?
Assume AB and CD are parallel lines. Find k and m.
k=31
m=118
Angles that are across from each other when 2 lines intersect and are congruent
What are vertical angles?
angles 4 and 7 are
what is alternate exterior angles?
Find x.
What is x = 85?
Find PRQ
What is PRQ = x = 44?
if PQR is a right angle, find x.
What is x=18?
All angles around a vertex/point add to
What is 360 degrees?
angles 5 and 6 are
what is none of the above?
(They are vertical angles)
Name all the vertical angles you see in this picture.
AGF + CGD
AGC + DGF
Find CDO
What is CDO = x = 52?
Find x.
what is x = 25?
DAILY DOUBLE!
Describe the exterior angle theorem for triangles.
What is when the sum of the 2 nonajacent interior angles of a triangle is equal to the measure of the exterior angle formed by a line extending from the side of the triangle?
angles 2 and 8 are
what is none of the above?
(if adjacent, they would be supplementary)
Name 4 pairs of adjacent angles
MANY OPTIONS! A few....
AGF and FGE
AGF and AGB
BGC and CGD
DGE and CGD
FGB and BGC
CGF and EGF
DGC and AGB
etc.
Find 1, 2, and 3
What is
1=140
2=40
3=100?
DAILY DOUBLE! Find y.
y=30