point - an exact location in space, line - a straight path of points that continues without end in BOTH directions, ray - part of a line that has one endpoint and continues on without end in ONE direction, line segment - part of a line between two end points, angle - formed by two rays or line segments that have the same endpoint (VERTEX), acute angle - less than a right angle, between 1° and 89°, right angle - forms a square corner, exactly 90°, obtuse angle - greater than a right angle, less than a straight angle, between 91° and 179°, straight angle - forms a straight line and is 180°, equilateral triangle - triangle with equal side lengths, acute triangle - triangle with 3 acute angles, isosceles triangle - triangle with 2 equal side lengths, right triangle - triangle with a right angle, scalene triangle - triangle with NO equal sides, obtuse triangle - triangle with one obtuse angle, center - the middle point of a circle,

Geometry: Angles and Types of Triangles

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