Triangle
 AB A number formed by 3 segments joining three noncollinear points.You are watching: Triangle with at least two sides congruent Equilateral Triangle Has 3 congruent sides Isosceles Triangle A triangle v at least two congruent sides. Scalene Triangle Has no congruent sides Acute Triangle Has three acute angles Estclairdrake.netngular Triangle Has three congruent angles Obtuse Triangle Has one obtuse angle Right Triangle A triangle with one appropriate angle Interior Angles The side opposite the appropriate angle in a right triangle Exterior Angles When the political parties of a triangle space extended, the angles that are surrounding to the interior angles space exterior angles Corresponding Angles When two figures are congruent, the angles that room in matching positions space congruent. Corresponding Sides When two numbers are congruent, the political parties that space in matching positions space congruent Corollary A declare that can be proved easily by making use of the theorem Congruent Figures Two geometric numbers that have exactly the very same size and also shape and all bag of corresponding angles and corresponding sides are congruent Legs Sides the a appropriate triangle or the congruent sides of an isosceles triangle Hypotenuse The side opposite the right angle in a right triangle Triangle amount Theorem The sum of the procedures of the interior angles that a triangle is 180 degrees. Exterior angle Theorem measure of an exterior edge of a triangle is equal to the sum of the steps of the 2 nonadjacent internal angles. Corollary come the Triangle sum Theorem The acute angles of a best triangle are complementary. When 2 geometric figures are congruent, there is a correspondence Third angle Theorem If two angles of one triangle room congruent to 2 angles of one more triangle, then the third angles are additionally congruent. Side-Side (SSS) Congruence Postulate If three sides the one triangle room congruent to 3 sides that a 2nd triangle, climate the two triangles are congruent. Side-Angle-Side (SAS) Congruence Postulate If two sides and the contained angle that one triangle are congruent to two sides and also the included angle that a 2nd triangle, then the two triangles space congruent. Polygon Congruence Postulate Two polygons are congruent if and also only if there is a correspondence between their sides and also angle together that: each pair of corresponding angles is congruent; each pair of corresponding sides is congruent Angle-Side-Angle (ASA) Congurence Postulate If 2 angles and also the had side in one triangle are congruent to two angles and the contained side in one more triangle, climate the two triangles space congruent Angle-Angle-Side (AAS) Congruence Postulate If 2 angles and a nonincluded next of one triangle room congruent come the corresponding angles and nonincluded side of an additional triangle, climate the triangles space congruent. Hypotenuse-Leg (HL) Congruence Theorem If the hypotenuse and also a leg of a ideal triangle space congruent to the hypotenuse and a leg of another triangle, climate the two triangles are congruent. CPCTC Corresponding parts of congruent triangles space congruent Isosceles Triangle Theorem If 2 sides that a triangle space congruent, climate the angles opposite those sides room congruent. Converse that the Isosceles Triangle Theorem If 2 angles of a triangle space congruent, climate the political parties opposit those angles are congruent. Legs of an isosceles triangle The two congruent sides Vertex Angle The angle opposite the basic of one isosceles triangle Base Angles The angles whose vertices space the endopoints the the basic of an isosceles triangle Corollary An added theorem that deserve to be easily obtained from the original theorem The measure up of every equilateral triangle is___________ 60 degrees The bisector that the vertex angle of one isosceles triangle is the_____________. perpendicular bisector that the base A diagonal line of a parallel divides the parallelogram right into ____________. two congruent triangles Opposite political parties of a parallelogram are _____________. congruent Opposite angles of a parallelogram room _____________. congruent Consecutive angle of a parallelogram are _____________. supplementary The diagonals that a parallel _____________. bisect each other A rhombus is a _____________. parallelogram A rectangle is a _____________. parallelogram The diagonals the a rhombus are_____________. perpendicular The diagonals the a rectangle room _____________. congruent The diagonals that a kite are _____________. perpendicular A square is a _____________ and _____________. rectangle; rhombus The diagonals that a square room _____________ and are _____________ of each other congurent; the perpendicular bisector If two pairs that opposite sides of a quadrilateral space congruent, then the square is a _____________. parallelogram If one pair that opposite political parties of a quadrilateral room _________ and also ______ climate the quadrilateral is a parallelogram parallel; congruent If the diagonals the a square bisect each other, climate the quadrilateral is a _____________. parallelogram If one edge of a parallel is a appropriate angle, then the parallel is a _____________. rectangle Housebuilder Theorem If the diagonals the a parallelogram are congruent, climate the parallel is a rectangle If one pare of nearby sides of a parallelogram are congruent, then the parallel is a _____________. rhombus If the diagonals the a parallel bisect the angle of the parallelogram, climate the parallel is a _____________.See more: Dodge 26 Inch Rims For Dodge Ram 1500 Rims 26, 16 Results For Dodge Ram 1500 Rims 26 rhombus If the diagonals that a parallelogram space perpendicular, then the parallelogram is a _____________. rhombus Triangle Midsegment Theorem A midsegment that a triangle is parallel to a side of the triangle and also has a measure equal to half of the measure up of the side Triangle Inequality Theorem The amount of the lengths of any two political parties of a triangle is higher than the length of the third side
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