Angles
An angle is two straight lines joined together at what?
vertex
On a straight line, angle A measures 35°.
What is the measure of angle B?
If an angle is exactly 90 degrees ... it is called what?
Right angle
On a straight line, angle A measures 20° and angle B measures 100°.
What is the measure of angle C?
60 degrees
Name 4 kinds of angles.
right, acute, obtuse, reflex
Two angles form a right angle. Angle A measures 25°.
What is the measure of angle B?
65 degrees
A straight angle measures ________ degrees.
180 degrees
Around a point, the sum of angles is 360°. If angle A = 90° and angle B = 120°,
what is the measure of angle C?
150 degrees
An obtuse angle measures between _____ degrees and ____ degrees.
More than 90 and less than 180 degrees?
Around a point, the sum of angles is 360°. Angle A measures 80°, angle B measures 95°, and angle C measures 110°.
What is the measure of angle D?
75 degrees