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Question 1-1
Which expression is equivalent to the measure of <4 in the image below?

Question 1-1 Which expression is equivalent to the measure of <4 in the image below-example-1
User Seifolahi
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1 Answer

16 votes
16 votes

Ⲁⲛ⳽ⲱⲉⲅ:

  • m∠1 + m∠3


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Ⲋⲟⳑⳙⲧⳕⲟⲛ :

Using the property of alternate angles , let's first make the pair of equal angles :

‎ㅤ‎ㅤ‎ㅤ➙ m∠1 = m∠ 5

‎ㅤ‎ㅤ‎ㅤ➙ m∠2 = m∠ 6

‎ㅤ‎ㅤ‎ㅤ➙ m∠4 = m∠3 + m∠ 5

‎ㅤ‎ㅤ‎ㅤ➙ Since , m∠ 5 = m∠1

‎ㅤ‎ㅤ‎ㅤ➙ m∠ 4 = m∠ 3 + m∠1

Alternate Angles :

Alternate angles are angles that occur on opposite sides of the transversal line and have the same size. Alternate angles are equal: We can often spot interior alternate angles by drawing a Z shape: There are two different types of alternate angles, alternate interior angles and alternate exterior angles.


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User Yoon Lee
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