Question
Find the value of ∠A.
- 25°
- 30°
- 35°
- 90°
Hint:
Make total angle equals to 90 degrees.
The correct answer is: 25°
* 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.
* The symbol ∠ represents an angle. Angles are measured in degrees (°) using a protractor.
Given That:
>>>From figure:
Since, it is a right angle, we can write the above figure as-> A + 65° = 90°.
>>>A = 90° – 65°
A = 25°
>>>Therefore, the angle A is equal to 25 degrees.
According to Angle Addition Postulate, A + 65° = 90°.
A = 90° – 65°
A = 25°
>>>Therefore, the angle of measure of A is 25 degrees.
Related Questions to study
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.
