### We found 98 resources with the concept interior angles

Lesson Planet

#### Angles: Parallel Lines

For Students 9th - 11th Standards
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.
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#### Angles in Polygons

For Students 8th - 10th Standards
Show your class that finding angle measures is a regular calculation with a resource that provides 12 problems dealing with the measures of angles in regular polygons. Pupils use formulas for the sum of measures of angles in a polygon to...
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EngageNY

#### More on the Angles of a Triangle

For Students 8th Standards
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 emphasizes the vocabulary related to these...
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#### Applying Angle Theorems

For Teachers 7th Standards
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.
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Lesson Planet

#### Geometric Figures and Scale Drawings

For Students 7th Standards
Scale up your lessons on geometry and ask learners to investigate conditions on triangles, scale drawings, area and circumference of circles, and angle relationships. The resource includes activities and a homework assignment.
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#### Interior Angles, Exterior Angles, and Diagonals of Polygons

For Students 8th - 11th Standards
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...
2:14
Lesson Planet

#### Polygon Angle Sum

For Students 9th - 12th Standards
Using patterns to build a formula is an important mathematical skill. Pupils discover a formula to find the sum of interior angles in a polygon by analyzing a pattern. The additional videos show how to use the formula to find various...
3:58
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#### Triangle Angle Sum

For Students 9th - 12th Standards
Don't believe everything that you hear — make them prove it! The video shows two methods to prove the Triangle Angle Sum Theorem. The following two videos apply the theorem to finding missing angle measures.
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Lesson Planet

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

For Students 6th Standards
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...
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Lesson Planet

#### Walking Polygons

For Teachers 4th - 6th Standards
Get up and move! With this kinesthetic activity, young mathematicians walk the sides and interior angles of given polygons. With pivoting and rotating, learners become familiar with the sum of the interior angles of a triangle.
Lesson Planet

#### Regular Tessellations of the Plane

For Teachers 9th - 11th Standards
Bringing together the young artists and the young organizers in your class, this lesson takes that popular topic of tessellations and gives it algebraic roots. After covering a few basic properties and definitions, learners attack the...
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#### Accelerated Geometry Review Sheet

For Students 8th - 10th Standards
Your geometry learners use their knowledge of various geometric concepts to write proofs. Starting with givens containing parallel line segments with transversals and triangles and quadrilaterals, and the mid-point and distance formulas;...
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#### Polygons and Angles

For Students 6th - 10th
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.
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#### Triangle Sum Theorem

For Teachers 8th - 10th Standards
Your visual geometry learners will appreciate triangle drawings as they model the triangle sum theorem and algebraically solve to find the missing interior angle in a triangle. Practice problems increase in complexity and vary in their...
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#### Tile Patterns I: Octagons and Squares

For Teachers 7th - 9th Standards
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...
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#### Tile Patterns II: Hexagons

For Teachers 7th - 9th Standards
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...
5:09
Lesson Planet

#### How Do You Find Missing Angles in a Triangle With Variables?

For Teachers 8th - 10th
Are you working on finding the missing angles of triangles in your class? Consider this video. An instructor uses the triangle sum theorem to create an equation that helps her find the missing angles. She explains each step and writes...
5:44
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#### How Do You Find Missing Angles in a Triangle With Variables?

For Teachers 6th - 12th
Are you working on finding the missing angles in triangles in your class? Consider this video. An instructor uses the triangle sum theorem to create an equation that helps her find the missing angles. She explains each step and writes...
4:47
Lesson Planet

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

For Teachers 6th - 10th
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...
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#### Linear Equations

For Students 8th - 9th
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,...
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#### Geometry - Angles Overview

For Students 7th - 8th
Learners address 14 questions that include naming all pairs of opposite and supplementary angles for sets of intersecting lines and then, finding the measure of the unknown angle. They determine the measure of the angle that is...
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#### Transversals and Angles - Homework 14.3

For Students 5th - 8th
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...
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#### Transversals and Angles - EL 14.3

For Students 4th - 5th
In this identifying alternate interior and exterior angles worksheet, students study two diagrams and complete a T-Chart by placing angle pairs in the correct columns. Students fill in six blanks.
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#### Angle Pairs - Reteach 14.2

For Students 4th - 5th Standards
Practice recognizing types of additive angles with a worksheet in which pupils review adjacent, interior and exterior, complementary, and supplementary angles and use a diagram to give examples of them. Be aware that the diagram involves...