McGraw Hill
Lines and Angles
Why was the obtuse angle upset? Because it was never right! A valuable resource is loaded with background information on types of angles and lines. Learners review the characteristics of parallel, perpendicular, and intersecting lines,...
CK-12 Foundation
Angle Classification: Angle Exploration
Acute or obtuse? Seems right to me! As scholars explore the simulation, they investigate angle measures. Questions ask them to classify the angles using correct naming conventions.
Curated OER
Types of Angles
In this angles worksheet, students identify types of angles. They describe a given angle as acute, obtuse, right, straight or reflexive. This two-page worksheet contains 9 problems. Answers are provided on the last page.
Math Mammoth
Triangles 1
In this triangles worksheet, learners measure and calculate the measurements of eight triangles, their sums and classify the triangles as acute, obtuse or right.
Curated OER
Travel Triangles
Students demonstrate and understanding of the three types of angles using triangles and quadrilaterals. In this angles lesson plan, students learn about acute, obtuse and right angles. They use cut-outs to find the areas of triangles and...
Curated OER
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...
Curated OER
Angles (Various)
In this angles activity, students analyze a group of 8 angles. There are no directions for use, but students could measure these with a protractor or classify them as acute, right or obtuse.
Curated OER
Classifying Triangles
In this classifying triangles worksheet, students explore given lengths or angle measurements and then classify each triangle as isosceles, scalene or equilateral. They also determine if the triangle may be right, acute or obtuse. This...
Curated OER
Hey! What Is Your Angle?
Fifth graders create and classify straight, right, acute and obtuse angles. In this clever lesson, 5th graders utilize pretzel sticks to form different types of angles. Best of all, they get to eat them at the end!
Curated OER
Exploring Angles
In this exploring angles worksheet, 10th graders solve 6 various problems of geometry by identifying various types of angles. First, they use the figure shown to list all the angles that have W as the vertex and then, name the straight...
Curated OER
Exploring Angles
In this exploring angles worksheet, 10th graders solve 12 various types of problems that are related to measuring various angles. First, they name the vertex of an angle and determine whether it appears to be acute, obtuse, right, or...
Curated OER
Rallytable Angle Measuring
In this geometry worksheet, young scholars measure various angles. First, they write what type of angle each one is, whether right, acute, or obtuse. Then students estimate the measurement and then write the actual measurement for each...
Curated OER
Identify different types of angles
In this angles learning exercise, students identify angles as either being acute, obtuse, right, or straight. Students identify 4 angles.
EngageNY
Inscribed Angle Theorem and Its Applications
Inscribed angles are central to the lesson. Young mathematicians build upon concepts learned in the previous lesson and formalize the Inscribed Angle Theorem relating inscribed and central angles. The lesson then guides learners to prove...
Curated OER
Draw Angles of Given Type
In this angle type learning exercise, students draw 9 angles. Each angle is of a specified type rather than a given number of degrees.
Curated OER
Types of Angles
For this online math worksheet, learners perform calculations which allow them to identify 3 types of angles. This excellent resource allows the students to check their answers, and to get "hints" should they run into difficulties. A...
Curated OER
Angle Exploration and Classification
Students compare and contrast angles and identify them as acute, obtuse, right, or straight angles. They create rays and angles using uncooked spaghetti, read and discuss key vocabulary terms, and complete a variety of geometry worksheets.
Curated OER
Angle Explorations
Third graders observe angles in their classroom and create an angle finder to represent them.In this angles instructional activity, 3rd graders classify angles as acute, obtuse, right or straight. Students find the differences and...
Curated OER
Measure the Angle
Students measure angles. For this angle lesson, students draw angles. They use a protractor to measure angles and identify the angle as straight, right, acute, or obtuse.
Curated OER
What's Your Angle
In this angle worksheet, students identify five shapes and then place them together to form a square. Afterward, they answer three questions regarding the number of right, acute and obtuse angles. This one-page worksheet contains a total...
Curated OER
Year 5 Unit 2b
This slide-show is packed with information relating to a variety of mathematical concepts. Intended as an accompaniment to a full unit, this resource provides definitions, explanations, and opportunities for learners to practice their...
Curated OER
Geometric Properties
Students find triangular angles using the angle theorem. In this geometry lesson, students describe labeled triangles, use the pythagorean theorem, and rewrite information about triangles in standard form.
Utah Education Network (UEN)
Angles, Degrees, Protractors . . . Oh My!
Fourth and fifth graders make a protractor and identify various angle types. For this protractor and angle lesson, learners make their own protractor and use it to measure a variety of angles. They complete worksheets while identifying...
Curated OER
Classifying Angles Online
In this online classifying angles worksheet, students work out the answers to sixteen math questions and fill in the boxes with their answers. Students check their answers online as they go and the computer calculates the overall score...
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