# Lesson 3 5 Proving Lines Parallel Identify Parallel

• Slides: 14

Lesson 3 -5 Proving Lines Parallel

Identify Parallel Lines A. Given 1 3, is it possible to prove that any of the lines shown are parallel? If so, state the postulate or theorem that justifies your answer.

Identify Parallel Lines A. Given 1 3, is it possible to prove that any of the lines shown are parallel? If so, state the postulate or theorem that justifies your answer. Answer: Yes, because <1 & <3 are corresponding ang

Identify Parallel Lines B. Given m 1 = 103 and m 4 = 100, is it possible to prove that any of the lines shown are parallel? If so, state the postulate or theorem that justifies your answer.

Identify Parallel Lines B. Given m 1 = 103 and m 4 = 100, is it possible to prove that any of the lines shown are parallel? If so, state the postulate or theorem that justifies your answer. Answer: NO, because if lines a and c were II then <1 & <4 would be congruent; AIA

A. Given 1 5, is it possible to prove that any of the lines shown are parallel? A. Yes; ℓ ║ n B. Yes; m ║ n C. Yes; ℓ ║ m D. It is not possible to prove any of the lines parallel.

B. Given m 4 = 105 and m 5 = 70, is it possible to prove that any of the lines shown are parallel? A. Yes; ℓ ║ n B. Yes; m ║ n C. Yes; ℓ ║ m D. It is not possible to prove any of the lines parallel.

Use Angle Relationships Find m ZYN so that || . Show your work.

Use Angle Relationships

ALGEBRA Find x so that A. x = 60 B. x = 9 C. x = 12 D. x = 12 || .

GAMES In the game Tic-Tac-Toe, four lines intersect to form a square with four right angles in the middle of the grid. Is it possible to prove any of the lines parallel or perpendicular? Choose the best answer. A. The two horizontal lines are parallel. B. The two vertical lines are parallel. C. The vertical lines are perpendicular to the horizontal lines. D. All of these statements are true.