What is a Triangle?
A triangle is a closed shape with three sides and three angles. The sum of the angles in a triangle is always 180 degrees. Triangles are classified based on the lengths of their sides and the measures of their angles.Types of Triangles
1. By Side Lengths: - Equilateral Triangle: A triangle with all three sides of equal length. - Isosceles Triangle: A triangle with at least two sides of equal length. - Scalene Triangle: A triangle with no equal sides.2. By Angles: - Acute Triangle: A triangle with all three angles less than 90 degrees. - Right Triangle: A triangle with one 90-degree angle. - Obtuse Triangle: A triangle with one angle greater than 90 degrees.Formulas for Triangles:
1. Perimeter: The perimeter of a triangle is the sum of the lengths of its three sides. - Perimeter = Side1 + Side2 + Side32. Area: The area of a triangle can be calculated using the base and height. - Area = (1/2) * Base * Height3. Pythagorean Theorem: For a right-angled triangle, the Pythagorean theorem states: - a² + b² = c², where a and b are the lengths of the two shorter sides, and c is the length of the hypotenuse.Study Guide:
.◂Math Worksheets and Study Guides Fourth Grade. Mean
The resources above cover the following skills:
Knowledge of Statistics: Students will collect, organize, display, analyze, or interpret data to make decisions or predictions.
Data Analysis: Describe a set of data.
Determine median, mode, and range (Assessment limit: Use no more than 8 pieces of data and whole numbers (0 - 100)).
Model the mean of a set of data.