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types of triangles: equilateral, isosceles and scalene. Equilateral triangle: • All sides are equal in length • All angles are equal in size (60°) Isosceles triangle: • Two sides are equal in length • Two angles are equal in size . Scalene triangle: • No sides are equal in length • No angles are equal in size
Isosceles Trapezium. 1 pair of unequal parallel sides, non-parallel sides equal. 2 pairs of equal angles. Equal in length. 1 (no rotational symmetry) (a+b) A= ×h. 2. Kite.
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A trapezium is a quadrilateral with at least one pair of sides parallel. Here are some examples of trapeziums: All trapeziums possess the following property: One pair of sides of a trapezium is parallel. This trapezium is usually called a rhombus: This trapezium is usually called a parallelogram: This trapezium is usually called a square:
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A trapezoid has two pairs of base angles. For instance, in trapezoid ABCD, TMD and TMC are one pair of base angles. The other pair is TMA and TMB. The nonparallel sides are the legs of the trapezoid. If the legs of a trapezoid are congruent, then the trapezoid is an isosceles trapezoid.
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An isosceles trapezium has one line of symmetry. There is one way to cut the shape into a pair of mirrored halves. Trapeziums do not have line symmetry or rotational symmetry.
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What if the legs of a trapezoid are congruent?
Mar 4, 2023 · If a trapezium has a line of symmetry, it is classed as isosceles. Isosceles trapeziums have two pairs of equal angles. The non-parallel sides in an isosceles trapezium will be equal length. An isosceles trapezium has two diagonals of equal length.
