Chapter 1.4, Problem 6WE

To determine

Another name the angle $\angle ALD$ of below plot:

Answer to Problem 6WE

Another names of angle $\angle ALD$ are $\angle 2$ and $\angle DLA$ .

Explanation of Solution

Given:

The plot is shown below:

Calculation:

Consider an angle as shown below:

The above angle can be named in three ways such as:

  $\begin{array}{l}\angle 1\\ \angle ABC\\ \angle CBA\\ And,\\ \angle B\end{array}$

The given angle ( B ) must be in center.

Here, the given plot is shown below:

Thus, angle $\angle ALD$ can be named as:

  $\begin{array}{l}\angle 2\\ And,\\ \angle DLA\end{array}$

Hence, another names of angle $\angle ALD$ are $\angle 2$ and $\angle DLA$ .