I think the answer is: 7,015,000,000
Step-by-step explanation:
<h3><u>Note</u>
: </h3>
The text below that are formatted in bold and underlined font are the solutions to the missing boxes in your given problem.
<h3><u>
Explanation:</u></h3>
Given that ∠1, ∠2, ∠3, and ∠4 are formed by two intersecting segments, and that:
∠1 and ∠2 form a linear pair
∠2 and ∠3 form a linear pair
These linear pair relationships suggest that by the Linear Pair Postulate:
<u>∠1 and ∠2 are supplementary</u>. ⇒ Linear Pair Postulate
<u>∠2 and ∠3 are supplementary</u>. ⇒ Linear Pair Postulate
m∠2 + m∠ 3 = 180° ⇒ <u>Definition of supplementary angles</u>.
<u>m∠1 + m∠3 = m∠2 + m∠ 3</u> ⇒ Substitution Property of Equality.
m∠1 = m∠3 ⇒ <u>Subtraction Property of Equality</u>.
