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Lesson Plan
Curated OER

What's Your Angle

For Teachers 3rd - 5th
Students create an original lesson about geometry and angles. In small groups they take pictures using a digital camera of obtuse, acute, right, and straight angles that they find at school. Students use the photos in a computer...
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Worksheet
Curated OER

Classifying Angles: Greater Than, Less Than, or Equal to 90 Degrees?

For Students 2nd - 4th
In this angles activity, students analyze four angles. For each angle, students decide if it is greater, less than, or equal to a right angle. Students check the correct box.
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Worksheet
Curated OER

Informal Geometry

For Students 8th - 12th
Middle and high schoolers solve and complete 29 various types of problems. First, they match each name with its correct formula. Then, students find the length of the missing side and the distance between the two points given. In...
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Lesson Plan
Curated OER

Identifying Angles

For Teachers 4th
Fourth graders discuss and examine examples of the different types of angles. After learning the names of the geometric shapes students identify the types of angles and then complete the Kidspiration activity, Identifying Angles.
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Worksheet
Curated OER

Classify Angles Worksheet

For Students 5th - 6th
In this angle classification worksheet, students solve 8 problems in which an angle measurement in degrees is analyzed. Students classify each angle as right, obtuse, or acute.
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Lesson Plan
Curated OER

Geometry: Classifying Angles

For Teachers 9th - 12th
Students measure, construct, and classify angles as acute, right, straight, and obtuse. Once they have completed an angle worksheet, students use a map of South Carolina to locate cities by constructing the aforementioned angles.
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Lesson Plan
Curated OER

South Caro-angular

For Teachers 9th - 12th
Students classify and measure angles.  In this angular instructional activity, students measure, contruct, and classify angles.  They identify angles as acute, right, obtuse, and straight. 
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Lesson Plan
Curated OER

Angle Action 1,2 and 3

For Teachers 8th - 10th
Students investigate angles through construction. In this geometry lesson, students use a protractor to identify the measurement of an angle. They identify angles cut by a transversal and two parallel lines.
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Lesson Plan
Curated OER

Triangle Side Lengths and Angles Measures

For Teachers 9th - 10th
Students identify missing sides and angles. In this geometry lesson, students use triangular theorems to identify the missing sides. They use the Pythagorean Theorem to find the different ratios of each side.
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Worksheet
Curated OER

Finding Unknown Angles

For Students 10th
For this finding unknown angles worksheet, 10th graders find each numbered angle's measure for 20 different angles shown in the diagrams. They calculate the size of an angle when the other two angles are known to equal 180 degrees. Then,...
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Worksheet
Curated OER

Triangles

For Students 10th
In this triangles worksheet, 10th graders solve and complete 22 different problems related to various types of triangles. First, they name the shortest and longest sides and the smallest and largest angles in each of triangles...
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Worksheet
Curated OER

Easy Worksheet: Classify the Triangle

For Students 9th - 12th
In this classify the triangle worksheet, students solve 6 short answer problems. Students identify the type of triangle being described according to its angle measures and side lengths.
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Worksheet
Curated OER

Chapter 8 Test: Geometry Vocabulary

For Students 7th - 9th
In this geometry activity, students match geometry words to illustrated examples. They find the missing angle of given polygons. This eight-page activity contains 45 problems. Answers are provided on the last two pages.
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Lesson Plan
Curated OER

Geometry Straws

For Teachers 3rd - 8th
Students create different angles and shapes by using different lengths of straws. In this geometry straws lesson plan, students glue straws onto paper and define what they have made.
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Worksheet
Curated OER

Classifying Triangles

For Students 6th
In this classifying triangles worksheet, 6th graders write the type of triangle, acute, right or obtuse, for 9 pictures of triangles, answers included.
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Worksheet
Curated OER

Describe Five Polygons

For Students 6th - 9th
In this polygons learning exercise, learners use the parallel, acute, right, obtuse, straight, and reflex to describe the five shapes provided.
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Worksheet
Curated OER

Identifying Triangles

For Students 7th - 9th
In this triangles practice worksheet, students respond to 4 questions that require them to identify the pictured triangles as acute, right, obtuse, scalene, isosceles, or equilateral triangles.
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Worksheet
Curated OER

Identifying Triangles

For Students 5th - 7th
In this triangles practice worksheet, students respond to 4 questions that require them to identify the pictured triangles as acute, right, or obtuse triangles.
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Interactive
Curated OER

Have You Got The Angle?

For Students 5th - 6th
In this angle instructional activity, students complete a set of 10 multiple choice questions. An answer link is provided; page is labeled as a "post test."
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Lesson Plan
Curated OER

Twenty-Five Measures of the Angles of a Triangle Problems

For Teachers 9th - 10th
In this triangle worksheet, students calculate the measures of the angles or the sums of the measures of the angles in twenty-five triangle problems and hands-on activities.  The solutions are provided.
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Worksheet
Curated OER

Angles and Parallel Lines

For Students 8th - 10th
In this geometry worksheet, students identify the interior and exterior angles of parallel lines cut by a transversal. There are 11 questions with an answer key.
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Worksheet
Curated OER

Geometry

For Students 7th - 8th
In this line and angles worksheet, students explore basic geometry vocabulary.  They classify polygons.  Students determine the area and perimeter of given shapes.  They examine the parts of a circle, find volume and...
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Lesson Plan
Curated OER

Angle-Side Relationships

For Teachers 9th - 12th
Students calculate the different sides and angles of a triangle. In this geometry instructional activity, students use triangular properties to define the relationship between two triangle. They identify missing angles using the interior...
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Lesson Plan
Curated OER

Daily Upkeep 7

For Teachers 4th
For this geometry worksheet, 4th graders complete a quick set of math activities where they first identify which portion of a model is shaded in fraction form. Then, they select which angle best describes a given angle. Finally, students...

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