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Answer 1

Answer:

if two lines in a plane do not intersect each other , they are called parallel lines

Answer 2

Step-by-step explanation:

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1.] Define Parallel Lines

2.] How many angles are formed when three parallel lines are cut by a transversal ?

3.] Define and Differentiate between :-

• A pair of Adjacent angle & Linear pair.
• Supplemetary & Complementry Angles.
• Acute & Obtuse Angle.

4.] Define a transversal.

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1.]

➡ lf two lines intersect each other at any point, they are called Parallel Lines. The angle between these lines is 180°.

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2.]

➡ The total number of different angles that are formed by a transversal intersecting three parallel lines is 12.

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3.]

➡

• Adjacent Angle = Adjacent Angles are two angles that share a Common Vertex & Common Side.
• Linear Pair = A Linear Pair is two adjacent angles whose non-common sides form opposite rays.
• _____________________________

• Supplemetary Angle = The angles which measure up to 180 degrees, are called Supplementary Angles.
• Complementry Angles = The two angles which sum is always 90°, are called Complementary Angles.
• _____________________________

• Acute Angle = The angles which measures less than 90 degrees, are called Acute Angle.
• Obtuse Angle = The angles which measures more than 90 degrees, are called Obtuse Angle.

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4.]

➡ A line that intersects two or more other lines, are called Transversals Lines.

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