Curated OER
How Far Am I Traveling
Students solve for missing sides using the Pythagorean theorem. In this algebra lesson, students derive the six trigonometric values using the right triangle. They relate the Pythagorean theorem to the distance formula.
Curated OER
Pythagorean Theorem
In this Pythagorean theorem worksheet, students use the Pythagorean theorem to find the missing side of the triangles. Students complete 8 problems total.
Curated OER
Counting Exercise
For this counting worksheet, students count circles and triangles up to the number 5. Students complete 2 problems total on this worksheet.
Curated OER
Perimeter and Area
In this perimeter and area worksheet, 6th graders find the perimeter and area of different right triangles. Students complete 9 problems total.
Curated OER
Triangles
In this triangles instructional activity, students name the kind of triangle that is shown in the picture. Students name 3 different kinds of triangles.
Curated OER
Value of Triangles
In this geometry worksheet, students identify the missing sides and angles of triangles. They find the midsegment of each triangle. There are nine questions with an answer key.
Curated OER
Special Right Triangles
Students identify different types of special right triangles. In this geometry lesson, students differentiate between right triangles and isosceles triangles. they construct the triangles using geometry software and make conjectures...
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Exploring the Hinge Theorem
Students explore the application of Hinge Theorem. In this geometry lesson plan, students write inequalities, given two sides of a triangle. They solve problems with triangular inequalities using the proper theorem.
Curated OER
The Sierpinski Triangle
Students investigate the Sierpinski triangle. In this geometry instructional activity, students define fractal curves and its relationship to triangles. They identify repeating sequences and relate it to fractals.
Curated OER
Median
Students solve problems involving triangles. In this geometry lesson, students use the properties of triangles to find the angles and side. They identify the median and altitude of the triangle.
Curated OER
Hospital Locator
Students apply properties of triangles to the real world. In this geometry lesson, students identify the median and angle bisectors of triangles. They plan the appropriate are to place a new medical center based on their knowledge of...
Curated OER
Lines In Geometry
Pupils define important vocabulary words using a dictionary. In this geometry lesson, students identify and use properties of triangles to solve problems. They identify the median. altitude and angles as well as properties of...
Curated OER
Finding the Angle Measurements in Isosceles Triangles
In this angles worksheet, 9th graders find the angle measurements in four isosceles triangles. Two of these triangles are drawn inside a circle, where two of the sides of the triangles are formed by radii.
Curated OER
Identifying Triangles
Sixth graders identify and define a variety of triangles. For this identification of triangles lesson, 6th graders draw examples of each triangle on a whiteboard, then complete a worksheet.
Curated OER
Area and Perimeter
In this geometry worksheet, 10th graders use single variable equations to solve problems focusing on area and perimeter of triangles, trapezoids, parallelograms, rectangles, and hexagons. The one page worksheet contains seventeen...
Curated OER
Triangles
In this triangles worksheet, students solve for the missing angles and missing sides on the triangles given. Students complete 12 problems total.
Curated OER
Area and Periemeter
In this geometry worksheet, 10th graders determine the area and perimeters of various quadrilaterals and triangles. The one page worksheet contains ten problems. Answers are not provided.
Curated OER
Angles and Triangles
Eighth graders examine Jewish symbols. In this Holocaust lesson, 8th graders discuss the meanings behind the Swastika and the Star of David. Students also measure the angles and shapes with the symbols.
National Council of Teachers of Mathematics
How Many Triangles?
For this triangles activity, learners problem solve and shade triangles within other triangles. Students complete two problems.
Curated OER
Find the Missing Side of the Right Triangle
In this find the missing side of the right triangle worksheet, students use the Pythagorean theorem to find the missing side, given the other 2 lengths, for 4 triangles.
Curated OER
Pascal's Patterned Triangle
Fifth graders receive a brief history of Pascal's triangle. As a class the students construct the first few rows of the triangle. The students are then split into groups where they finish a worksheet identifying the total value of each...
Curated OER
Pythagorean Theorem for Algebra I
In this Pythagorean theorem for algebra I worksheet, students answer 10 problems finding the missing side of a right triangle using the Pythagorean theorem.
Curated OER
Using Algebraic Equations in Geometry Problems
In this using algebraic equations in geometry problems worksheet, 6th graders write an equation to solve each addition problem about geometry, then find the solution.
Print and Practice
Triangles and Rectangles
In this triangle and rectangle worksheet, students color triangles red and rectangles blue in a given set of shapes. A reference web site is given for additional activities.