What is a Quadrilateral? A quadrilateral is a closed figure with four sides and four angles. The sum of all angles in a quadrilateral is always 360°. 2. Types of Quadrilaterals (Based...
What is a Triangle? A triangle is a closed figure with three sides and three angles. The sum of all three angles in a triangle is always 180°. Triangles are the simplest polygon. 2....
Real Numbers (Conceptual) Real numbers include all rational and irrational numbers. They can be represented on a number line. Examples: 5, -3, 0.75, √2, π Important Points...
Heron’s Formula (Conceptual) Used to find the area of a triangle when you know the lengths of all three sides. Instead of measuring height, you can calculate area directly from the sides. Helpful...