4th Grade Math › Recognize Angles and Understand Angle Measurement: CCSS.Math.Content.4.MD.C.5
What is an angle that measures less than called?
An acute angle
An obtuse angle
A right angle
By definition, an acute angle is any angle that measures less than .
What is an angle that measures more than , but less than
called?
An obtuse angle
An acute angle
A ray
By definition, and obtuse angle is any angle that measure more than , but less than
.
An angle that measures is called ___________.
a straight angle
an obtuse angle
a ray
By definition, a straight angle measures .
The image below can be described as ___________.
an angle
a line
a ray
This image is an angle because it shows two rays meeting at an endpoint.
Two rays that meet at one point, an endpoint, is called ___________.
an angle
a line
a ray
By definition, an angle is composed of two rays that meet at a point, called the endpoint.
The image below can be described as ___________.
an acute angle
an obtuse angle
a straight angle
The image shows an acute angle because it has a measure of , which is less than
.
The image below can be described as a ___________.
ray
line segment
angle
By definition, a ray starts at a point and continues in a certain direction, with no endpoint.
What is a degree angle called?
A right angle
A line segment
A ray
By definition, a right angle measures .
The image below can be described as ___________.
an obtuse angle
an acute angle
a straight angle
The image shows an obtuse angle because it has a measure of , which is more than
but less than
.
The image below can be described as ___________.
a straight angle
an obtuse angle
a acute angle
This image is a straight angle because it measures .