Question

prove that the opposite angles form by two interesting lines are of equal measures​

Answer 1

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Answer 2

When two lines intersect each other, then theopposite angles, formed due to intersection are called vertical angles or vertically opposite angles. A pair of vertically opposite angles are always equal to each other. ... And the angleadjacent to angle X will be equal to 180 – 45 = 135°.Aug 31, 2020

ANSWER

Let AB & CD be two lines

∠1+∠4=180∘ (CD is a st. line)

∠4+∠3=180∘ (AB is a st. line)

∠1+∠4=∠4+∠3

∠1=∠3 similarly ∠2=∠4

thus proved