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### We found 58 resources with the concept exterior angles

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Algebra 50 - Three Variable Systems in the...

Other Resource Types
(58)

Lesson Planet

#### Inequalities in a Triangle

Stuck with triangle proofs? Take a 180° and provide learners with a guided worksheet that tests their knowledge with triangle inequalities. The questions require different types of proofs that range in levels of difficulty.

Lesson Planet

#### Geometry Definitions

Geometry is full of shapes, figures, and corresponding things here and there. The guide shares all of the key pieces of geometric information in a nicely color-coded and labeled sheet.

Lesson Planet

#### Identifying Similar Triangles

Math whizzes work with angle sums and exterior angles to figure out the measure of other angles. This particular publication provides comprehensive support in the form of an anticipatory activity, questions designed to prompt discussion,...

Lesson Planet

#### Exterior Angles in Convex Polygons: Lesson

Going around is the same no matter the number of sides. An installment in a geometry playlist explains exterior angles of a convex polygon. The video presents the formula to find the sum of the angles along with the formula for finding...

Lesson Planet

#### Exterior Angles Theorems: Lesson

Use the inside to find the outside. The resource presents two theorems dealing with exterior angles of a triangle. Using the two theorems, the segment from a larger geometry playlist works problems to solve for angle measures.

Lesson Planet

#### Alternate Exterior Angles: Lesson

Use an alternate approach to parallel lines. A resource in a comprehensive playlist on basic geometry develops the concept of alternate exterior angles and parallel lines. The presentation demonstrates how to identify alternate exterior...

Lesson Planet

#### Parallel and Skew Lines: Lesson

Is it possible for a pair to be parallel and skew? The resource provides the class opportunities to find out by examining the properties of parallel and skew lines. Part of a playlist on basic geometry, the video includes a brief...

Lesson Planet

#### Circles with Angles

Three angles meet at an arc ... have you heard that one before? The resource contains a diagram with a circle and three angles that intersect the circle at the same points. Pupils determine the type of each angle and its measurement,...

Lesson Planet

#### Angles, Arcs, and Segments in Circles

Investigate relationships between angles, arcs, and segments in circles. Pupils use geometry software to discover the relationships between angles, arcs, and segments associated with circles. Class members use similar triangles to...

Lesson Planet

#### Lines and Angles

Explore angle relationships associated with transversals. Pupils construct parallel lines with a transversal and find the measures of the angles formed. They figure out how the different angles are related before constructing...

Lesson Planet

#### Angles in Polygons

Polygons — it's all about the angles. Groups work with dynamic geometry software to find the sum of the measures of the angles of various polygons. After finding the information for several polygons, the groups generate a formula that...

Lesson Planet

#### Angles: Parallel Lines

Viewers are presented with seven problems with parallel lines and angle relationships and must use the given information to find the measures of specific angles. To finish, they explain their process in finding the measures in the problems.

EngageNY

#### More on the Angles of a Triangle

Angles and triangles: they're all connected. Uncover the connections between angles in triangles. Scholars learn how to find both exterior and interior angle measures in triangles. The lesson plan emphasizes the vocabulary related to...

Lesson Planet

#### Applying Angle Theorems

Polygon ... an empty bird cage? After finding the angles of a polygon, young mathematicians use the provided methods to solve the problem in multiple ways.

Lesson Planet

#### Interior Angles, Exterior Angles, and Diagonals of Polygons

How does the number of sides of a polygon affect the angle measures? Learners recognize a pattern in finding the total measure of interior and exterior angles and the number of diagonals. They use the patterns to calculate the number of...

Lesson Planet

#### Angles Formed by Transversals of Coplanar Lines

Create a strong understanding of the relationships formed when parallel lines intersect a transversal. Discuss each type of angle pair and their relationship to each other.

Lesson Planet

#### Unit 5 Math Vocabulary Cards (Grade 6)

Acute angle, line of symmetry, and vertex are a few terms you'll find in a set of 90 flashcards designed to reinforce math vocabulary. Included in the set are two types of cards; a word card printed in bold font, and a definition card...

Lesson Planet

#### Polygons and Angles

Get out those protractors! Geometers measure interior and exterior angles of 10 polygons, including a 24-gon. They also calculate the interior angle sum of the polygons.

Lesson Planet

#### Tile Patterns I: Octagons and Squares

This can be used as a critical thinking exercise in congruence or as a teaching tool when first introducing the concept. Four octagons are arranged in such a way that a square is formed in the middle. With this information, geometry...

Lesson Planet

#### Tile Patterns II: Hexagons

After learning that the sum of interior angles for triangles is 108 degrees, take it further to show that the sum of angles in any polygon is the same! Using hexagons, pupils practice finding the measure of the six congruent angles. Make...

Lesson Planet

#### What are Interior and Exterior Angles of a Polygon?

Break down interior and exterior angles with this video. Using a pentagon, a teacher demonstrates how to find the interior and exterior angles of a polygon. She goes on to explain a few of the properties of these angles, writing down all...

Lesson Planet

#### Linear Equations

Eighth and ninth graders solve and graph 42 different problems that include writing various equations and graphing them on a grid. First, they create a table for each equation and graph it on a grid locating the x-and y-intercepts. Then,...

Lesson Planet

#### Are They Special Angles?

Middle schoolers identify the correspondence between pairs of angles. They fill in the blank for seven questions. Learners investigate congruency using their graphing calculator and by following detailed directions. They identify...

Lesson Planet

#### Transversals and Angles - Homework 14.3

Upper graders and middle schoolers use a diagram to give examples vertical angles, alternate interior angles, and alternate exterior angles, find the degree measure of multiple angles, and draw and label a pair of complementary vertical...