I NEED HELP WITH THIS if two angles form a pair of vertical angles, then they are congruent

given ∠1 and ∠3 are vertical angles.

Prove ∠1≅∠3

You are given that ∠1 and ∠3 are verrtical angles.

Answers for the blanks:

A. supplementary angles

B. substitution

C. addition

D. subtraction

E. symmetric

F. m∠1≅m∠1

G. ∠1 = ∠3

47.28 or 47.2857143

step-by-step explanation:

you just divide 331 by 7 and you get that answer. ( i think so tho)

answer is 8x+24

area of vanessa's patio = length × width

given, length = (3x² + 5x + 10)

width = (x² - 3x - 1)

area of vanessa's patio = (3x² + 5x + 10)(x² - 3x - 1)

= 3x²(x² - 3x - 1) + 5x(x² - 3x - 1) + 10(x² - 3x - 1)

= 3x⁴ - 9x³ - 3x² + 5x³ - 15x² - 5x + 10x² - 30x - 10

= 3x⁴ - 4x³ - 8x² - 35x - 10

hence, expression of vanessa's patio = (3x⁴ - 4x³ - 8x² - 35x - 10)

the eight graders whould be the answer

step-by-step explanation: could you give me 5 stars