## Plane Geometry |

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AABC AADC ABCD acute angle adjacent angles altitude angle formed angles are equal angles equal apothem central angle circle whose radius circumscribed congruent triangles Construct a circle Corollary corresponding sides diagonals diameter divided drawn equal angles equal arcs equidistant equilateral triangle Exercises exterior angle feet figure Find the area Find the length Find the number geometry given circle given line given point hypotenuse inches intercepted arc intersect isosceles trapezoid isosceles triangle line segment locus measured median meet methods known midpoint number of degrees number of sides opposite sides parallel lines parallelogram perimeter Plan of Attack Proposition prove quadrilateral ratio rectangle regular hexagon regular polygon rhombus right angle right triangle secant similar triangles statement straight line tangent Theorem third side transversal trapezoid triangle equals unequal vertex angle vertices