

- AN ISOSCELES TRIANGLE HAS AT LEAST TWO CONGRUENT SIDES ISO
- AN ISOSCELES TRIANGLE HAS AT LEAST TWO CONGRUENT SIDES PLUS
- AN ISOSCELES TRIANGLE HAS AT LEAST TWO CONGRUENT SIDES PROFESSIONAL
AN ISOSCELES TRIANGLE HAS AT LEAST TWO CONGRUENT SIDES PROFESSIONAL
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AN ISOSCELES TRIANGLE HAS AT LEAST TWO CONGRUENT SIDES ISO
The name derives from the Greek iso (same) and skelos (leg). Therefore, an isosceles triangle has two equal sides and two equal angles. This property is equivalent to two angles of the triangle that are equal.

The following Venn Diagram shows the inclusions and intersections of the various types of quadrilaterals. An isosceles triangle is a type of triangle that has at least two of its equal sides.

Venn Diagram of Quadrilateral Classification One of the important properties of isosceles. The angle made by the two legs is called the vertex angle. The angles between the base and the legs are called base angles. The congruent sides of the isosceles triangle are called the legs. Quadrilateral is a four-sided polygon that has no congruent sides. An isosceles triangle is a triangle that has at least two congruent sides. Some textbooks say a kite has at least two pairs of adjacent congruent sides, so a rhombus is a special case of a kite.) Is a quadrilateral with exactly two pairs of adjacent congruent sides. Is a trapezoid whose non-parallel sides are congruent. in America, trapezium usually means a quadrilateral with no parallel sides.) (There may be some confusion about this word depending on which country you're in. Is a quadrilateral with exactly one pair of parallel sides.
AN ISOSCELES TRIANGLE HAS AT LEAST TWO CONGRUENT SIDES PLUS
On the other hand, not all quadrilaterals and parallelograms are rectangles.Ī rectangle has all the properties of a parallelogram, plus the following:Ī rhombus has all the properties of a parallelogram, plus the following:Ĭan be defined as a rhombus which is also a rectangle – in other words, a parallelogram with four congruent sides and four right angles. The angle made by the two legs of the isosceles triangle is called the vertex angle. The other side is called the base and the angles between the base and the congruent sides are called base angles. Is a parallelogram with four right angles, so all rectangles are also parallelograms and quadrilaterals. An isosceles triangle is a triangle that has at least two congruent sides. Is a quadrilateral in which both pairs of opposite sides areĪ parallelogram also has the following properties: There are many special types of quadrilateral.
