Question

# Is the figure a polygon? Is it convex or concave?

- Not a polygon, convex
- Polygon, convex
- Not a polygon
- Polygon, concave

Hint:

### For a polygon to be convex, all of its interior angles must be less than 180 degrees. Otherwise, the polygon is concave.

## The correct answer is: Polygon, concave

### Since all sides are closed, it is a polygon. A side that can be turned into a line that goes on the inside of a shape is called concave.

### Related Questions to study

### A polygon with eight sides is called a(n) _____.

### A polygon with eight sides is called a(n) _____.

### Find the value of ∠A.

According to Angle Addition Postulate, A + 65° = 90°.

A = 90° – 65°

A = 25°

>>>Therefore, the angle of measure of A is 25 degrees.

### Find the value of ∠A.

According to Angle Addition Postulate, A + 65° = 90°.

A = 90° – 65°

A = 25°

>>>Therefore, the angle of measure of A is 25 degrees.

### Classify each angle as acute, obtuse, right or straight

Step 1:

Given angle is equal to 180°.

Step 2:

So, the given angle is a straight angle

>>>Hence, the angle of measurement is a straight line.

### Classify each angle as acute, obtuse, right or straight

Step 1:

Given angle is equal to 180°.

Step 2:

So, the given angle is a straight angle

>>>Hence, the angle of measurement is a straight line.

### Identify whether the angle is acute, obtuse, right or straight

Step 1:

Given angle is less than 90.

Step 2:

So, the given angle is an acute angle.

>>>Hence, the angle of measure is an acute angle.

### Identify whether the angle is acute, obtuse, right or straight

Step 1:

Given angle is less than 90.

Step 2:

So, the given angle is an acute angle.

>>>Hence, the angle of measure is an acute angle.

### Measure the following angle using a protractor.

Step 1:

We line up one ray with 0°. We then read the angle measurement where the other ray crosses the protractor.

Step 2:

Reading from the protractor, the given angle measures 17°.

>>>>Hence, the angle of measure is 17 degrees.

### Measure the following angle using a protractor.

Step 1:

We line up one ray with 0°. We then read the angle measurement where the other ray crosses the protractor.

Step 2:

Reading from the protractor, the given angle measures 17°.

>>>>Hence, the angle of measure is 17 degrees.

### Classify the given angle.

Step 1:

Given angle is less than 90°.

Step 2:

So, the given angle is an acute angle.

>>>Then, the angle of measure is an acute angle.

### Classify the given angle.

Step 1:

Given angle is less than 90°.

Step 2:

So, the given angle is an acute angle.

>>>Then, the angle of measure is an acute angle.

### ___________ is the point where the two rays meet.

Vertex is the point where the two rays meet.

>>Therefore, the point where the two different lines meet is called as Vertex.

### ___________ is the point where the two rays meet.

Vertex is the point where the two rays meet.

>>Therefore, the point where the two different lines meet is called as Vertex.

### Classify the given angle.

Step 1:

Given angle is equal to 90°.

Step 2:

So, the given angle is a right angle.

>>>Hence, we can say that the angle measured is an acute angle.

### Classify the given angle.

Step 1:

Given angle is equal to 90°.

Step 2:

So, the given angle is a right angle.

>>>Hence, we can say that the angle measured is an acute angle.

### Measure the following angle using a protractor.

Step 1:

We line up one ray with 0°. We then read the angle measurement where the other ray crosses the protractor.

Step 2:

Reading from the protractor, the given angle measures 132°.

>>>Therefore, the angle measure is 132 degrees.

### Measure the following angle using a protractor.

Step 1:

We line up one ray with 0°. We then read the angle measurement where the other ray crosses the protractor.

Step 2:

Reading from the protractor, the given angle measures 132°.

>>>Therefore, the angle measure is 132 degrees.

### Identify whether the angle is acute, obtuse, right or straight

Step 1:

Given angle is equal to 180.

Step 2:

So, the given angle is a straight angle

>>>Therefore, we can say that the angle measured is a straight line.

### Identify whether the angle is acute, obtuse, right or straight

Step 1:

Given angle is equal to 180.

Step 2:

So, the given angle is a straight angle

>>>Therefore, we can say that the angle measured is a straight line.

### Classify the angle in the given figure.

Step 1:

Given angle is equal to 90.

Step 2:

So, the given angle is a right angle.

>>>Hence, we can say that the figure is right angle.

### Classify the angle in the given figure.

Step 1:

Given angle is equal to 90.

Step 2:

So, the given angle is a right angle.

>>>Hence, we can say that the figure is right angle.

### Identify the point of vertex?

>>>An angle is formed when two straight lines or rays meet at a common endpoint. The common point of contact is called the vertex of an angle.

>>>Hence, the vertex would be at B.

### Identify the point of vertex?

>>>An angle is formed when two straight lines or rays meet at a common endpoint. The common point of contact is called the vertex of an angle.

>>>Hence, the vertex would be at B.

### Measure the following angle using a protractor.

Step 1:

We line up one ray with 0°. We then read the angle measurement where the other ray crosses the protractor.

Step 2:

Reading from the protractor, the given angle measures 118°.

>>>Therefore, the angle measured is exactly 118 degrees.

### Measure the following angle using a protractor.

Step 1:

We line up one ray with 0°. We then read the angle measurement where the other ray crosses the protractor.

Step 2:

Reading from the protractor, the given angle measures 118°.

>>>Therefore, the angle measured is exactly 118 degrees.

### Classify each angle as acute, obtuse, right or straight

Step 1:

Given angle is more than 90 and less than 180

Step 2:

So, the given angle is an obtuse angle.

### Classify each angle as acute, obtuse, right or straight

Step 1:

Given angle is more than 90 and less than 180

Step 2:

So, the given angle is an obtuse angle.

### Name the sides of angle BAC?

*The sides of angle BAC are ray AB and ray AC.

### Name the sides of angle BAC?

*The sides of angle BAC are ray AB and ray AC.