Solving for Angles with Addition
Grade 10th Grade · Math · 50 min
What's Included
Learning Objective
I can use the angle addition postulate to solve for unknown angle measures.
Warm-Up Video
MaeMap · 11:41
KutaSoftware: Geometry- Angle Addition Postulate Part 1
Guided Notes
3 key concepts
- 1
The Angle Addition Postulate states if point X is interior to ∠ABC, then m∠ABX + m∠XBC = m∠ABC.
- 2
If m∠KLB = 26° and m∠BLM = 60°, and B is interior to ∠KLM, then m∠KLM = 86°.
- 3
If m∠EDC = 145° and m∠EDW = 61°, then to find m∠WDC, we can subtract 61° from 145°.
Practice Questions
9 questions · Short answer
Exit Ticket
Quick comprehension check
“If m∠ABC = 120° and m∠ABD = 35°, find m∠DBC.”
Teacher Guide
Get the complete package:
- Answer keys for all questions
- Differentiation strategies
- Extension activities
- Printable student handouts
