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Family Activity: Triangles and Quadrilaterals
In this triangles and quadrilaterals worksheet, middle schoolers solve 7 short answer problems. Students find objects around the house that are constructed from triangles, parallelograms, trapezoids, squares, rectangles. Middle schoolers...
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Perimeter of Triangles and Rectangles
Fifth graders study perimeter. In this math lesson, 5th graders use Cheerios to find the perimeter of various polygons. Students discuss how to figure the perimeter of triangles, squares and rectangles.
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Area-Time to Get in Shape
Students investigate the properties of triangles and parallelograms. In this geometry instructional activity, students calculate the formula used to find the are of a triangle and other polygons. They create a visual model to represent...
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Congruence in Triangles
In this geometry worksheet, students identify and label triangles as being congruent or not. They use the SSS, ASA or SAS as their description. There are 18 questions with an answer key.
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Delta, Delta, Delta
High schoolers construct equilateral triangles and a 'laser' triangle. In this reflection lesson students build a retro-reflector using mirrors.
Pennsylvania Department of Education
Kites: On the Right Track
Students use the Pythagorean theorem to discover the relationships between the lengths of sides of a right triangle. In this right triangles lesson plan, students use their reasoning and mathematical skills.
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Classifying Polygons
Students study polygons. In this math lesson, students play a game in which they learn the classification system for polygons. Students identify the properties of quadrilaterals.
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Shapes...the Beginning of Geometry
Students identify and name basic shapes and points. In this elementary geometry lesson plan, students use printable cut outs to name circles, triangles, and squares before playing a game with them. They play a game of "Pin the Tail on...
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Rotations
In this rotations worksheet, students draw and label a rotated image for each triangle and label its center. Students complete 6 problems.
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Dilations
In this dilations worksheet, students draw and label dilated images for the triangles and label the centers. Students complete 6 problems total.
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Pythagorean Theorem
Students explore the Pythagorean Theorem. For this math lesson, students apply the Pythagorean Theorem to real life situations. Students find the hypotenuse and solve real world problems.
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Pythagorean Theorem Homework
In this Pythagorean theorem worksheet, students determine if given side lengths for right triangles, find the length of the missing side in right triangles, and find the length of the diagonals formed in boxes given side lengths.
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Obtuse Triangles
Fourth graders explore obtuse triangles. In this geometry instructional activity, 4th graders make obtuse triangles with paper and scissors. They determine how to find the center of their triangle.
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Navajo Rug
Students explore geometry in Navajo rugs. In this shape art lesson, students create a Navajo rug design using triangles and squares. Students investigate designs on the Internet and then create an original design.
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Isosceles Triangles
Students investigate triangles. In this shapes geometry lesson, students define and state the attributes for equilateral, scalene, and isosceles triangles. Students locate the prefix "tri" in a variety of words and make connections with...
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Equilateral Triangles
Learners examine the attribute of equilateral triangles. In this equilateral triangle lesson, students examine a number of paper triangles to determine how they are classified. They determine how triangles are depicted in Navajo rugs.
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Identifying Triangles
In this geometry worksheet, 10th graders identify a triangle as right, acute, or obtuse and identify the parts of a right triangle in a drop and drag game format. The one page interactive worksheet contains eight matching questions...
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Angle-Side Relationships
Students calculate the different sides and angles of a triangle. In this geometry lesson, students use triangular properties to define the relationship between two triangle. They identify missing angles using the interior angle theorem.
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Pythagorean Theorem
Students apply properties of Pythagorean to solve problems. In this geometry lesson plan, students identify the different parts of a right triangle using ratios. they solve problems using squares and square roots.
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Special Right Triangles
Young scholars identify the different parts of a right triangle. In this geometry lesson, students use the Pythagorean Theorem to identify missing sides and angles of a right triangle. They work with irrational and rational roots.
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Triangles in Architecture
Students find triangles in the real world. In this geometry activity, students analyze and identify properties of two and three-dimensional objects. They differentiate between similarity and congruence.
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How Far Am I Traveling
Young scholars 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.
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Area of Triangle Worksheet
In this area activity, students find the area of a triangle given the height and the base. They also find the height or base given the area of the triangle.
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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.