Triangle
A triangle is a polygon with three sides and three angles. The sum of the interior angles of a triangle is always 180 degrees.
Types of Triangles
There are several types of triangles:
- Equilateral Triangle: A triangle with all three sides of equal length and all three angles of equal measure (60 degrees).
- Isosceles Triangle: A triangle with at least two sides of equal length and two angles of equal measure.
- Scalene Triangle: A triangle with no sides of equal length and no angles of equal measure.
- Right Triangle: A triangle with one right angle (90 degrees).
- Obtuse Triangle: A triangle with one obtuse angle (greater than 90 degrees).
- Acute Triangle: A triangle with all angles acute (less than 90 degrees).
Properties of Triangles
Some important properties of triangles include:
- The sum of the lengths of any two sides of a triangle is always greater than the length of the third side (Triangle Inequality Theorem).
- The area of a triangle can be calculated using the formula: A = (1/2) * base * height.
- The perimeter of a triangle is the sum of the lengths of its three sides.
- The centroid, circumcenter, incenter, and orthocenter are important points within a triangle.
◂Math Worksheets and Study Guides Kindergarten. Patterns & Sorting
Coloring Worksheet
Categories - Animals 
Coloring Worksheet
Categories - Animals Coloring Worksheet
Categories - Food Coloring Worksheet
Categories - Food Coloring Worksheet
Categories - Vehicles Coloring Worksheet
Categories - Vehicles Worksheet/Answer key
Patterns Coloring Worksheet
Categorizing Coloring Worksheet
Categorizing Coloring Worksheet
Grouping & Graphing Coloring Worksheet
Grouping & Graphing Coloring Worksheet
Matching Coloring Worksheet
Matching Coloring Worksheet
Patterns I (a-b-a-b) Coloring Worksheet
Patterns I (a-b-a-b) Coloring Worksheet
Patterns II (a-b-b-a-b-b) Coloring Worksheet
Patterns II (a-b-b-a-b-b) Coloring Worksheet
Patterns III (a-b-c-a-b-c) Coloring Worksheet
Patterns III (a-b-c-a-b-c) Coloring Worksheet
Sorting Coloring Worksheet
Sorting Worksheet/Answer key
Patterns and Algebra
Coloring WorksheetColoring WorksheetColoring WorksheetColoring WorksheetColoring WorksheetWorksheet/Answer keyColoring WorksheetColoring WorksheetColoring WorksheetColoring WorksheetColoring WorksheetColoring WorksheetColoring WorksheetColoring WorksheetColoring WorksheetColoring WorksheetColoring WorksheetColoring WorksheetColoring WorksheetColoring WorksheetWorksheet/Answer keyThe resources above cover the following skills:
Measurement and Data
Describe and compare measurable attributes.
Directly compare two objects, with a measurable attribute in common, to see which object has “more of” or “less of” the attribute, and describe the difference. [K-MD2]
Classify objects and count the number of objects in each category.
Classify objects into given categories; count the number of objects in each category, and sort the categories by count. (Limit category counts to be less than or equal to 10.) [K-MD3]