Triangle Angle Sum Theorem and Exterior Angle Theorem
by Making Algebra Fun by Angela Dougher © 2026
Premier Publisher
Price: $2.5 USD
Subjects: math,mathMiddleSchool,mathHighSchool,highSchoolGeometry,congruence
Grades: 8,9,10
Description
Triangle Angle Sum Theorem and Exterior Angle Theorem Boom Cards™ Deck This interactive Boom Cards™ deck includes 15 self-checking digital questions focused on the triangle angle sum theorem & exterior angle theorem. Question types include: 🟢Finding the missing angle in a triangle given the other 2 angles 🟢Finding the missing angle in a triangle given the other 2 angles (with variables) 🟢Finding the exterior angle in a triangle given the 2 remote interior angles 🟢Finding the exterior angle in a triangle given the 2 remote interior angles (with variables) 🟢Combining both theorems to find all missing angles in a figure Keep in mind, you can delete any questions your students are not ready for! This deck is ideal for independent practice, small groups, math centers, intervention, or review, and works well for high school geometry instruction. Why Boom Cards Are Awesome: ✅ For Students: Interactive and self-paced with immediate feedback—boosts understanding, builds confidence, and keeps learners engaged. ✅ For Teachers: Self-grading and standards-aligned, this resource saves you time while giving your students meaningful algebra practice—whether in person or online.
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