What do you call a part of a line with two endpoints?
A line segment or interval.
What type of angle is this?

Obtuse
What is the sum of supplementary angles?
180 degrees.
What happens to vertically opposite angles when two lines cross?

They are equal.
What is a transversal?

A line that intersects two or more parallel lines.
What is a ray?
A part of a line that starts at one point and goes forever in one direction.
What type of angle is 90 degrees?
Right Angle
What is the missing angle?

18o
What is b?
b = 40o
Name this angle relationship

Corresponding
Name each of the following:

Which is an acute angle?
b & c
Find the missing angle?

75o
Find m.
m = 80o
Which angle is alternate to the 35o angle?
x
How many points does a line extend through?
Infinitely many points.
Estimate the size of this angle and name its type.

Size: 120o-150o
Reflex angle
If angle A and angle B add up to 90° and angle B is twice angle A, what are their measures?
A = 30°
B = 60°
Find the missing angles
a = 142o
b = 38o
Find the missing angle.

x = 109o (co-interior)
If two straight lines intersect at a point, how many distinct angles are formed at the intersection?
Four distinct angles are formed.
An angle measures 360°. What is this type of angle called, and what does it represent geometrically?
Full rotation (or full angle); it represents one complete turn around a point.
What is angle F?

F = 130o
Find the missing angle.

20o
Find the values of xo and yo.

x = 52o (corresponding)
y = 128o (supplementary)