These lines are parallel lines., This is a Right Angle., Set Squares help us to draw Right Angles., An Obtuse Angle is more than a Right Angle., Perpendicular lines form a Right Angle., We can see perpendicular lines in window panes., A Right Angle is formed in the clock with its two hands., The Pizza slice looks like an Acute Angle or an angle smaller than a Right Angle., Two straight sides of an angle are called Arms., This is a Straight Angle.

Angles and Lines

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