Angle Types
What do we call an angle less than 90 degrees?
Acute angle
A right angle measures how many degrees?
90 degrees
What do we call a straight path that goes on forever in both directions?
A line
Two angles add up to a right angle. If one angle is 30°, what is the other angle?
60 degrees
A right angle is 90°. One part is 20°. What is the measure of the other part?
70 degrees
What do we call an angle exactly 90 degrees
Right angle
A straight angle measures how many degrees?
180 degrees
What do we call part of a line with two endpoints?
A line segment
A straight line is 180°. If one angle is 50°, what is the measure of the other angle on the line?
130 degrees
A straight line is 180°. One angle is 75°. What is the measure of the other angle on the line?
105 degrees
What do we call an angle that is grater than 90 degrees but less than 180 degrees?
Obtuse angle
An acute angle measures between what degrees?
0 degrees and 90 degrees
What do we call part of a line that has one endpoint and goes on forever in one direction?
A ray
An angle is made of two smaller angles: 25° and 40°. What is the total measure?
65 degrees
A large angle is made of three smaller angles: 15°, 25°, and 40°. What is the total measure?
80 degrees
What do we call an angle that is exactly 180 degrees?
Straight angle (line)
An obtuse angle measures between what degrees?
90 degrees and 180 degrees
An angle is made of two that share a common endpoint.
Rays
A angle is 100°. One part is 35°. What is the measure of the missing part?
65 degrees
An angle is 150°. It is split into two parts. One part is 65°. What is the measure of the other part?
85 degrees
Is a 35° angle acute, right, or obtuse?
Acute
A full rotation measures how many degrees?
360 degrees
What is the point called where two rays meet?
Vertex
What is a complementary angle?
Two angles that add up to 90° (forming a right angle or "corner").
Two angles add up to 180°. One is 32°. What is the other?
148 degrees