plese help me to understand i have do it plese give full explanation (saby 123)
Answers
Answer:
1st part
(It is the universal formula that sum of the angles is 180°)
If u add 45° and 45°, your answer would be 90°.
If u have studied integers, u know that when you shift a number to the other side of the equal to, the sign of the number changes.
In this case, we have to find the value of x, so we have to shift 90° to the other side of the equal to sign. As I explained u previously, the sign of the number changes when u shift it. So +90° changed to -90°. 180°-90°=90°. So the value of x is 90°.
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2nd part
In the first part, we found that the value of x is 90°. So copy 90° in the place of x. Copy 45° as 45° and note down z as it is. We also got to know that the sum of all the angles is 180°. So after writing equal to we have to write 180°. Add 90° and 180°. The answer would be 135°. And now, to find the value of x, subtract 135° from 180°. The value of z would be 45°.
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3rd part
Now, we have to find the value of y. Shift +45° to the other side of the equal to. Now it will change to -45°. Subtract -45° from 180°. The value of y would be 135°.
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