Choose the appropriate triangle according to the following:
Angle B equals 90 degrees.
Choose the appropriate triangle according to the following:
Angle B equals 90 degrees.
If two adjacent angles are not equal to one another, then one of them is obtuse and the other is acute.
True or false?
An acute angle is smaller than a right angle.
True or false?
One of the angles in a rectangle may be an acute angle.
Which figure depicts a right angle?
Choose the appropriate triangle according to the following:
Angle B equals 90 degrees.
Let's note in which of the triangles angle B forms a right angle, meaning an angle of 90 degrees.
In answers C+D, we can see that angle B is smaller than 90 degrees.
In answer A, it is equal to 90 degrees.
If two adjacent angles are not equal to one another, then one of them is obtuse and the other is acute.
The answer is correct because the sum of two acute angles will be less than 180 degrees and the sum of two obtuse angles will be greater than 180 degrees
True
True or false?
An acute angle is smaller than a right angle.
The definition of an acute angle is an angle that is smaller than 90 degrees.
Since an angle that equals 90 degrees is a right angle, the statement is true.
True
True or false?
One of the angles in a rectangle may be an acute angle.
One of the properties of a rectangle is that all its angles are right angles.
Therefore, it is not possible for an angle to be acute, that is, less than 90 degrees.
False
Which figure depicts a right angle?
A right angle is equal to 90 degrees.
In diagrams (a) and (c), we see that the angle symbol is a symbol representing an angle that equals 90 degrees.
Which of the following angles are obtuse?
Does the drawing show an adjacent angle?
Does the drawing show an adjacent angle?
Does the drawing show an adjacent angle?
Does the drawing show an adjacent angle?
Which of the following angles are obtuse?
By definition, an obtuse angle is an angle that is greater than 90 degrees. We can see that in one drawing there is an angle of 90 degrees and therefore it is not an obtuse angle, the other two angles are less than 90 degrees meaning they are also not obtuse, they are acute angles.
Therefore, none of the answers is correct.
None of the options
Does the drawing show an adjacent angle?
Not true
Does the drawing show an adjacent angle?
Not true
Does the drawing show an adjacent angle?
True
Does the drawing show an adjacent angle?
Not true
Does the drawing show an adjacent angle?
Does the drawing show an adjacent angle?
Does the drawing show an adjacent angle?
True or false?
The sum of two acute angles can be greater than 180 degrees?
Which figure shows a right angle?
Does the drawing show an adjacent angle?
Not true
Does the drawing show an adjacent angle?
Not true
Does the drawing show an adjacent angle?
Not true
True or false?
The sum of two acute angles can be greater than 180 degrees?
False.
Which figure shows a right angle?
Which of the angles is not an obtuse angle?
Which of the following angles is a plane angle?
Which of the following angles is obtuse?
Which of the following angles is obtuse?
Which of the following angles is straight?
Which of the angles is not an obtuse angle?
Which of the following angles is a plane angle?
Which of the following angles is obtuse?
Which of the following angles is obtuse?
91°
Which of the following angles is straight?