Applying the Angle Addition Postulate
Free to teach as-is — the teacher guide, student handout, and slides are included.
Free — we'll email you an access link. Google Docs format.
Objective
I can use the angle addition postulate to find the measure of an angle when given two adjacent angles.
Part 1 of 3
Warm-up video
Unknown Channel · 5:00
We don't generate video — this one is by Unknown Channel on YouTube. The practice questions and exit ticket below were drafted by AI for this objective, and every question is editable in the teacher guide.
Part 2 of 3
Practice
7 questions
Define the angle addition postulate in your own words.
If the measure of angle A is 25 degrees and the measure of angle B is 15 degrees, what is the measure of the larger angle formed by angle A and angle B?
Part 3 of 3
Exit ticket
Quick comprehension check
“Angle XYZ is divided into two adjacent angles, angle XYW and angle WYZ. If the measure of angle XYW is 45 degrees and the measure of angle XYZ is 120 degrees, what is the measure of angle WYZ? Angle ABC is split into two adjacent angles, angle ABD and angle DBC. If the measure of angle ABD is 30 degrees and the measure of angle ABC is 90 degrees, what is the measure of angle DBC?”
Sample answer included in the free materials
Get the materials
Teacher guide, student handout, and slides — free, in Google Docs format
Teacher Guide
Complete lesson plan with answer keys and alternate activities
Student Handout
Printable worksheet
Slides
Ready to present
We'll ask for your email to send your access link — nothing else.
Teaching a group at a different level?
Where are your students right now? We'll rebuild this lesson to match — including the teacher guide, student handout, and slides, saved to your Google Drive.
Adapt This Lesson
