Illustrative Mathematics
Illustrative Mathematics: 8.g Find the Missing Angle
For this task, 8th graders are presented with a drawing of two parallel lines connected through two line segments. They are given the measures of two angles and are asked to find a third. Aligns with 8.G.A.5.
Purple Math
Purplemath: Greek Letters and Their Names
When you are working with geometry and trigonometry, you will see a lot of Greek letters. It will be helpful to know how the names of these letters are spelled and pronounced.
Other
Desmos: Geometry Scavenger Hunt
Use the Desmos transformation tools (link at top of page) to complete this scavenger hunt. There are three levels to choose from and solutions are included.
![Arts Now Learning: Performing Perimeter [Pdf] Lesson Plan](https://static.lp.lexp.cloud/images/attachment_defaults/resource/large/FPO-knovation.png "Arts Now Learning: Performing Perimeter [Pdf] Lesson Plan")
ArtsNow
Arts Now Learning: Performing Perimeter [Pdf]
In this lesson, 3rd graders calculate the perimeter of various geometric shapes and represent the perimeter with a movement phrase. They will identify the types of angles within each shape. Other students will identify the shape that was...
![Educaplus: Medida De Angulos [In Spanish] Activity](https://content.lessonplanet.com/knovation/original/438782-60bc9e768dd7b8aa5c7d013dceea2c55.jpg?1661599529 "Educaplus: Medida De Angulos [In Spanish] Activity")
Educaplus (Jesús Peñas Cano)
Educaplus: Medida De Angulos [In Spanish]
Practice measuring angles with the protractor with this interactive activity.
Educaplus (Jesús Peñas Cano)
Educaplus: Estimacion De Angulos
Check your skill estimating angles. You can have an error of five degrees.
Khan Academy
Khan Academy: Complementary and Supplementary Angles (No Visual)
Practice finding complementary and supplementary angles.
Khan Academy
Khan Academy: Constructing Angles Review
Review constructing angles with a protractor, then try constructing some of your own.
Khan Academy
Khan Academy: Constructing Triangles
Practice constructing triangles. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Draw Right, Acute, and Obtuse Angles
Create an acute, right, or obtuse angle using a given vertex. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Math Slice
Math Slice: Math Match Game
Test your geometry aptitude using this interactive matching game. Match pictures and symbols to the correct definition. Answers are verified immediately. Winners can earn as much as 10,000 dollars and have their name posted for the day.
CK-12 Foundation
Ck 12: Geometry: Supplementary and Complementary Angle Pairs
[Free Registration/Login may be required to access all resource tools.] Use reasoning to figure out the measures of missing angle measures
CK-12 Foundation
Ck 12: Geometry: Exterior Angles Theorems
[Free Registration/Login may be required to access all resource tools.] This concept teaches students the sum of exterior angles for any polygon and the relationship between exterior angles and remote interior angles in a triangle....
CK-12 Foundation
Ck 12: Vertical Angles
[Free Registration/Login Required] Students explore the concept of vertical angles by navigating through the interactive learning module and then answering questions that go along with the module.
Exploratorium
Exploratorium: Ilion High: Build a Clinometer
Instructions for building a clinometer are given on this page. Clinometers can be used to measure the angle of elevation of a right triangle, and in turn find the height of large objects.
Common Core Sheets
Common Core Sheets: Geometry 7.g.5 Worksheets
Print or create worksheets or flashcards to assess students' understanding of angle measure, area, surface area, and volume.
Common Core Sheets
Common Core Sheets: Geometry 7.g.2 Worksheets
Print or create worksheets or flashcards to assess students' understanding of creating triangles and identifying triangle angles and lengths.
CK-12 Foundation
Ck 12: Geometry: Angle Pairs
[Free Registration/Login may be required to access all resource tools.] Finding the measures of angle pairs including the measure of missing angles by using given information.
CK-12 Foundation
Ck 12: Geometry: Vertical Angles Grade 7
[Free Registration/Login may be required to access all resource tools.] Identify adjacent and vertical angles formed by intersecting lines and then find missing angle measures.
CK-12 Foundation
Ck 12: Geometry: Supplementary Angles
[Free Registration/Login may be required to access all resource tools.] Solve supplementary angle problems.
CK-12 Foundation
Ck 12: Geometry: Complementary Angles
[Free Registration/Login may be required to access all resource tools.] In this lesson students solve complementary angle problems. Students examine guided notes, review guided practice, watch instructional videos and attempt practice...
CK-12 Foundation
Ck 12: Geometry: Same Side Interior Angles
[Free Registration/Login may be required to access all resource tools.] Use same side interior angles to determine supplementary angles and the presence of parallel lines.
CK-12 Foundation
Ck 12: Geometry: Vertical Angles
[Free Registration/Login may be required to access all resource tools.] Identify adjacent and vertical angles formed by intersecting lines and then find missing angle measures.