Triangles are three-sided polygons with three angles and three vertices. They are classified based on sides as equilateral isosceles or scalene and by angles as acute right or obtuse. Triangles form the foundation of geometry and are used in various ...
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ΔABC represents a triangle with three vertices A, B, and C. It is a fundamental geometric shape with three sides and three angles. The sum of its interior angles is always 180°. Depending on side lengths and angles, ΔABC can ...
An isosceles triangle is a triangle with two equal sides and two equal angles opposite those sides. The third side is called the base and the angle opposite the base is the vertex angle. It shows symmetry along the altitude ...
In ΔABC if AD ⊥ BC then AD is the altitude from vertex A to side BC. This implies that AD forms a right angle with BC and divides the triangle into two right triangles. The property is essential in ...
In triangle ABC if DE is parallel to BC then by the Basic Proportionality Theorem AD divided by DB is equal to AE divided by EC and this property helps in proving similarity of triangles or finding unknown lengths in ...