G.2.5

Use facts about supplementary, complementary, vertical, and adjacent angles in a multi-step problem to write and solve simple equations for an unknown angle in a figure.

Assessment Banner - Assessment Questions Now Available!
Formative Assessments
Formative Assessments
Assessment Logo. Includes a gray clipboard on a blue background.
CPALMS: Students are asked to use knowledge of angle relationships to write and solve equations to determine unknown angle measures.

Find the Angle Measure

Assessment Logo. Includes a gray clipboard on a blue background.
CPALMS: Students are asked use knowledge of angle relationships to write and solve an equation to determine an unknown angle measure.

What is Your Angle?

Assessment Logo. Includes a gray clipboard on a blue background.
CPALMS: Students are asked to write and solve equations to determine unknown angle measures in supplementary and complementary angle pairs.

Solve for the Angle

Assessment Logo. Includes a gray clipboard on a blue background.
CPALMS: Students are asked to write and solve equations to determine unknown angle measures in supplementary angle relationships.

Straight Angles

Virtual/Hands-on Manipulatives
Virtual/Hands-on Manipulatives
Virtual Manipulatives Logo includes a laptop on a yellow background.
CPALMS: This applet allows users to manipulate polygons (from triangles to octagons) in order to determine the relationship between the sum of the interior angles and the total number of sides in the figure.

Angle Sums

Virtual Manipulatives Logo includes a laptop on a yellow background.
In this activity by Desmos, students explore the relationship among angles formed by a transversal and a system of two lines. They consider what happens whenever the two lines are parallel versus when they are not. This lesson is for teachers and leads students in virtual participation.

“Lines, Transversals, and Angles” by Desomos

Virtual Manipulatives Logo includes a laptop on a yellow background.
This activity is for students to be able to make a paper protractor to use as a tool for investigating measures of angles, even things at a distance view. This could open up student discussions as they explain how they know what the measures of angles are.

“Pocket Protractor” by Geometry Playground Exploratorium

Virtual Manipulatives Logo includes a laptop on a yellow background.
This virtual resource offers students and teachers an interactive and visual model to manipulate the protractor in order to determine the angle degrees and answer questions based on the visual. It can be used as a teaching and/or practice tool.

“Angle Activities – Spin the Protractor”

Assessment Questions
Assessment Questions
Assessments Logo. Includes 3 gray question marks on a purple background.
Click on this text to download this document.
Equation Editor 1
Assessments Logo. Includes 3 gray question marks on a purple background.
Click on this text to download this document.
Equation Editor 2
Content Coming Soon Logo
We are currently looking for great content to go here.

Change Me To Real Text

Videos of Expert Instruction
Videos of Expert Instruction
Decorative Light Bulb. Image includes gray lightbulb on purple background.
This video (approx. 7:30 min) reviews concepts of parallel and perpendicular lines and when angles are formed, as well as how they are named. Examples are modeled, precise vocabulary is discussed, and determining basic measures of angles is explained.

“Angle Basics” by Math Antics

Decorative Light Bulb. Image includes gray lightbulb on purple background.
This video (approx. 9:00 min) focuses on how angles are about rotation and the unit of measure is called degrees. Examples of measuring angles with a protractor are shown. Complimentary, Supplementary, and Straight angles are explored.

“Angles and Degrees” by Math Antics

Content Coming Soon Logo
We're currently looking for great content to go here!
Change Me To Real Text
Hook/Performance Tasks
Hook/Performance Tasks
Content Coming Soon Logo
We're currently looking for great content to go here!
Change Me To Real Text
Content Coming Soon Logo
We're currently looking for great content to go here!
Change Me To Real Text
Content Coming Soon Logo
We're currently looking for great content to go here!
Change Me To Real Text