Construction chapter 6 class 9

How do you solve lines and angles?

Solution

1. Step 1: Given
. u222.
2. DFE = X
. u222.
3. BFC = Y
. u222.
4. AFC = 100\xb0 u222
5. BFE = 45\xb0
6. Step 2: To find.
The value of Y-X.
7. Step 3: Approach and Working out.
To find Y-X, we need to find Y and X first.
Measure of angle Y: We are given u222.
8. AFC = 100\xb0 and, u222
9. AFC + u222
10. BFC = 180\xb0 as the sum of angles on the same side straight line is 180\xb0 100\xb0 + u222
11. BFC = 180\xb0

How many exercises are there in chapter 6 of class 9?

There are three exercises in class 9 mathematics chapter 6 (Lines and Angles).
In the first exercise (Ex 6.1), there are six questions..

What are the angles for Class 9?

Acute Angle: An angle that measures between 0\xb0 and 90\xb0 is called an acute angle.
Obtuse angle: An angle that measures between 90\xb0 and 180\xb0 is called an obtuse angle.
Right angle: An angle that is equal to 90\xb0 is called a right angle.
Reflex angle: An angle greater than 180\xb0 but less than 360\xb0 is called a reflex angle..

What are the angles in Class 9?

Acute Angle: An angle that measures between 0\xb0 and 90\xb0 is called an acute angle.
Obtuse angle: An angle that measures between 90\xb0 and 180\xb0 is called an obtuse angle.
Right angle: An angle that is equal to 90\xb0 is called a right angle.
Reflex angle: An angle greater than 180\xb0 but less than 360\xb0 is called a reflex angle..