Sum and Difference of Angles: Generate a random angle

What is the value of the void angle?

The empty angle is an angle adjacent to 160 degrees.

Remember that the sum of adjacent angles is 180 degrees.

Therefore, the value of the empty angle will be:

$180-160=20$

20

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:

$ABC=60+50$

$ABC=110$

110

What is the size of angle ABC?

DBC = 100°

Given that angle DBC is equal to 100 degrees. Let's look at the letters and note that angle ABC is given and equals 40 degrees

40

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:

$ABC=70+20+18$

$ABC=108$

108

Shown below is the right triangle ABC.

$∢\text{BAC}=55°$

Calculate the angle $∢\text{ACB}$.

35°

What is the size of the missing angle?

100°

What is the size of the unlabelled angle?

It cannot be calculated.

What is the size of the missing 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?

30°