Question

Give the letter that names each point.

1. $\left(\mathbf{2}\mathbf{,}\mathbf{30}\mathbf{°}\right)$
   
2. $\left(\mathbf{2}\mathbf{.}\mathbf{5}\mathbf{,}\mathbf{120}\mathbf{°}\right)$
   
3. $\left(\mathbf{1}\mathbf{,}\mathbf{-}\mathbf{90}\mathbf{°}\right)$

Short answer

1. The letter that names the point$\left(2,30°\right)$ is $\mathbf{P}$.
2. The letter that names the point$\left(2.5,120°\right)$ is $\mathbf{I}$.
3. The letter that names the point$\left(1,-90°\right)$ is $\mathbf{G}$.

Step-by-step solution

Part a. Step 1: Observe the diagram.

The given diagram is:

Part a. Step 2: Observe the diagram.

Highlight the point $P$.

Part a. Step 3: Name the letter that represents the given point.

From the above diagram, it can be noticed that:

The point$P$ is representing the given point $\left(2,30°\right)$.

Therefore the letter that names the given point$\left(2,30°\right)$ is $P$.

Part b. Step 1: Observe the diagram.

The given diagram is:

Part b. Step 2: Observe the diagram.

Highlight the point $I$.

Part b. Step 3: Name the letter that represents the given point.

From the above diagram, it can be noticed that:

The point $I$is representing the given point $\left(2.5,120°\right)$.

Therefore the letter that names the given point$\left(2.5,120°\right)$ is $I$.

Part c. Step 1: Observe the diagram.

The given diagram is:

Part c. Step 2: Observe the diagram.

Highlight the point $G$.

Part c. Step 3: Name the letter that represents the given point.

From the above diagram it can be noticed that:

The point$G$ is representing the given point $\left(1,-90°\right)$.

Therefore, the letter that names the given point$\left(1,-90°\right)$ is $G$.