Calculate the size of the unmarked angle:
Calculate the size of the unmarked angle:
Determine the size of angle ABC?
DBC = 100°
What is the size of angle ABC?
What is the size of angle ABC?
Shown below is the right triangle ABC.
\( ∢\text{BAC}=55° \)
Calculate the angle \( ∢\text{ACB} \).
Calculate the size of the unmarked angle:
The unmarked angle is adjacent to an angle of 160 degrees.
Remember: the sum of adjacent angles is 180 degrees.
Therefore, the size of the unknown angle is:
20
Determine the size of angle ABC?
DBC = 100°
We can see from the diagram that angle DBC equals 100 degrees.
We can also see that the size of angle ABC is shown and equals 40 degrees.
Therefore, the answer is 40.
40
What is the size of angle ABC?
In order to calculate the value of angle ABC, we must calculate the sum of all the given angles.
That is:
110
What is the size of angle ABC?
In order to calculate the value of angle ABC, we will begin by calculating the sum of all the given angles.
That is:
108
Shown below is the right triangle ABC.
Calculate the angle .
35°
What is the size of the missing angle?
What is the size of the missing angle?
What is the size of the unlabelled angle?
Calculate the value of the angle X.
Look at the isosceles triangle below.
AB = AC
What is the size of angle ACD?
What is the size of the missing angle?
100°
What is the size of the missing angle?
It cannot be calculated.
What is the size of the unlabelled angle?
It cannot be calculated.
Calculate the value of the angle X.
94
Look at the isosceles triangle below.
AB = AC
What is the size of angle ACD?
30°
Look at the isosceles triangle below.
AB = AC
What is the size of angle DEB?
Look at the isosceles triangle below.
AB = AC
What is the size of angle DEB?
30°