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How To Use A Protractor
Fifth graders use the SMART Board to demonstrate how to use a protractor to measure acute, obtuse, and right angles. For this protractor lesson plan, 5th graders also complete an angles worksheet.
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Types of Triangles
Young math whizzes solve four problems in which a triangle with labeled angle measurements is analyzed. They mark if each triangle is acute, right, or obtuse.
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Classify Triangles
Here is a classifying triangles practice activity in which learners sharpen their problem solving skills as they solve six story problems.
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Angles Lesson Plan
Students explore the relationship of angles as it relates to 2 and 3-D shapes. In this geometry lesson, students differentiate between acute, obtuse, right, alternate interior, exterior and adjacent angles. They manipulate a math...
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Angle Aerobics
Third graders review angle criteria and then stand. They demonstrate with their hands each type of angle called out by the teacher: right, acute, or obtuse. Music is added and students follow teacher in an angle aerobics class peppered...
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The Greedy Triangle-Intro to Geometric Shapes
In this geometry lesson, learners read The Greedy Triangle and use geoboards to construct geometric shapes. They identify the number of sides and angles each shape has.
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Identifying Angles
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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Angles
In this angles worksheet, students determine if sixteen angles are acute, obtuse, straight or right. Students defend their decisions with their classmates.
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South Caro-angular
Students classify and measure angles. In this angular lesson, students measure, contruct, and classify angles. They identify angles as acute, right, obtuse, and straight.
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Classifying Triangles
In this classifying triangles worksheet, 10th graders solve 6 different problems related to the classification of triangles either by their angles or by their sides. First, they use a protractor and a ruler to draw triangles using the...
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Easy Worksheet: Classify the Triangle
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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Chapter 8 Test: Geometry Vocabulary
For this geometry worksheet, students match geometry words to illustrated examples. They find the missing angle of given polygons. This eight-page worksheet contains 45 problems. Answers are provided on the last two pages.
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Geometry Straws
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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Identify triangles
Students explore triangles. In this geometry lesson, students will create note cards with pictorial depictions of right, acute,obtuse, scalene, isosceles, equilateral and equiangular triangles. Students will verbally describe each type...
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Independent Practice 2: Triangles
In this triangle instructional activity, students identify given triangles according to their sides and angles. Afterward, students draw triangles to match given descriptions. This one-page instructional activity contains 15 problems.
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Angle Land and Angle Aerobics
Sixth graders investigate different types of angles. In this geometry activity, 6th graders use a protractor to identify acute, obtuse, and straight angles.
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Twenty-Five Measures of the Angles of a Triangle Problems
For 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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Have You Got The Angle?
In this angle worksheet, 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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Angle Action 1,2 and 3
Students investigate angles through construction. In this geometry instructional activity, 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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Triangle Side Lengths and Angles Measures
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.
Virginia Department of Education
The Pythagorean Relationship
Add up areas of squares to discover the pythagorean relationship. Small groups create right triangles with squares along each side. They calculate the areas of each square and notice the relationship. Groups construct other types of...
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Naming Angles: Worksheet 2
In this naming angles worksheet, students name each angle shown as acute, obtuse or right, 12 angles total. Answers are included on page 2.
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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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Intersecting Planes
In this intersecting planes worksheet, 10th graders solve and complete 27 various types of problems. First, they use the diagrams at the right to answer each of the questions. Then, students measure each angle shown and classify them as...