Acute Angle, Measures between 0 and 90 degrees, Right Angle, Measures 90 degrees, Obtuse Angle, Measures between 90 and 180 degrees, Straight Angle, Measures Exactly 180 degrees, Congruent, All their measurement is identical/ equal, Perpendicular Line, Lines that intersect at right angle, Alternate, Indicates that each angle are on opposite of a line, Angle, Space between 2 intersecting surfaces and close to the point they meet, Interior, On inside, opposite of exterior, Transversal line, a line that intersects two or more other (often parallel ) lines

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