FREE Circle Theorems Foldable | Inscribed Angles | SpEd Geometry
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Quick overview
## About the Resource
The **Free Circle Theorems Interactive Notebook Sampler** is a ready-to-use **7-page Geometry resource for Grades 9–10** featuring a complete introductory lesson on the **Inscribed Angle Theorem** with visual guided notes, an accordion foldable, graduated practice, and worked solutions.
Students explore the relationship between **inscribed angles and intercepted arcs**, including the special case of an inscribed angle formed by a diameter. **Color-coded diagrams, sentence frames, and a consistent four-step problem-solving routine** provide additional structure for students who benefit from visual and language supports.
Product description
FREE 7-page sample of my **Circle Theorems INB Foldables unit**. Full Inscribed Angle Theorem lesson, cut-and-fold accordion template, practice, and answer key. SpEd-scaffolded. Print and teach today.
Grab this **FREE 7-page sample** of the premium **Circle Theorems Interactive Notebook Foldables unit** and see how visual supports can make abstract circle geometry more accessible for struggling learners.
This is a complete, teachable mini-lesson on the **Inscribed Angle Theorem**, taken from the full 70-page unit.
### ✨ WHAT'S INCLUDED (7 PAGES)
**Page 1 — Cover** UM Printables branding and an overview of what is included in the free sample.
**Page 2 — Color-Coding Legend & Sentence Frames** The 5-color system:
* Red = central angle * Blue = inscribed angle * Green = arc * Purple = chord * Orange = tangent
Also includes **5 universal sentence frames** and the **4-step problem-solving protocol**.
**Page 3 — Inscribed Angle Theorem Lesson** Full theorem statement, color-coded diagram, worked example using the 4-step protocol, and **Thales' theorem special case**: an inscribed angle on a diameter measures 90°.
**Page 4 — Cut-and-Fold Accordion Template** Printable 4-panel foldable with dotted cut lines, solid fold lines, and assembly instructions.
**Page 5 — Practice Problems** 6 graduated problems with answer lines and sentence-frame reminders.
**Page 6 — Answer Key** All 6 practice problems with lucid 4-step worked reasoning.
**Page 7 — Get the Full Resource** Premium CTA page with QR code linking to the complete 70-page unit.
### 🎯 WHY THIS FREE SAMPLE IS WORTH YOUR TIME
**Genuinely Usable:** Pages 3–6 provide a complete Inscribed Angle Theorem lesson with practice and an answer key.
**SpEd Scaffolds Included:** The color-coding system, sentence frames, and 4-step protocol are the same supports used throughout the full unit.
**Print-Ready:** Vector PDF with embedded fonts and no preparation required beyond printing.
### 📐 STANDARDS ALIGNMENT
**CCSS.MATH.CONTENT.HSG.C.A.2** — Identify and describe relationships among inscribed angles, radii, and chords. This sample focuses on the inscribed angle–arc relationship.
**CCSS.MATH.CONTENT.HSG.C.A.3** — Inscribed angles on a diameter are right angles. Thales' theorem is covered as a special case.
**Grade Band:** 9–10 (Geometry) Also appropriate for Grade 11–12 Pre-Calculus review and Grade 8 advanced.
### 📦 HOW TO USE THIS FREE SAMPLE
Download and print **Pages 3–6** for a ready-to-teach Inscribed Angles lesson.
Print **Page 4** on cardstock if possible for the accordion foldable.
Project **Page 6** for whole-class review, or print it for absent students.
### 🚀 LOVE THIS FREE SAMPLE? GET THE FULL 70-PAGE UNIT
The complete **Circle Theorems Interactive Notebook Foldables** unit includes:
Foldable 1 — Parts of a Circle Vocabulary Flip Book Foldable 2 — Inscribed Angles Theorem Accordion Foldable 3 — Chord Properties 4-Tab Foldable Foldable 4 — Tangent Properties Tri-Fold Foldable 5 — Inscribed Quadrilaterals Discovery Foldable 6 — Angle-Arc Pocket Sort Foldable 7 — Cheat-Sheet One-Pager Cumulative Reflection Journal + 4-Section Answer Key + Teacher Notes
**Circle Theorems Foldables | INB | SpEd Geometry HSG.C.A.2**
### ❤️ WHY TEACHERS LOVE UM PRINTABLES
“Finally — a circle theorems unit my IEP students can actually access. The color-coding is a game-changer.”
“The discovery activities are gold. My students figured out the inscribed angle theorem themselves and were SO proud.”
“The 4-step protocol has transferred to other units. My students now use Identify-Label-Apply-Solve on their own.”
### 🔖 MORE UM PRINTABLES RESOURCES
Triangle Congruence Interactive Notebook Foldables (SpEd Scaffolded) Right Triangle Trigonometry Discovery Unit Transformations on the Coordinate Plane Foldables Volume & Surface Area Mega Bundle Geometric Proof Sentence Frames Pack
Follow **UM Printables** on TPT for new freebies and resources.
### 📝 PLEASE REVIEW THIS FREE RESOURCE
If this free sample saved you prep time or helped a student, please consider leaving a review on TPT.
Frequently Asked Questions
How many pages are included in this free sample?
The sample includes **7 pages**.
What theorem is taught in the sample?
The sample focuses on the **Inscribed Angle Theorem** and includes the **Thales' theorem special case** for an inscribed angle on a diameter.
How many practice problems are included?
The practice page contains **6 graduated problems**.
Is an answer key included?
Yes. Page 6 includes **worked solutions for all 6 practice problems**.
Is a foldable template included?
Yes. The sample includes a **4-panel cut-and-fold accordion template** with assembly instructions.
What visual supports are included?
The sample includes **color-coded circle relationships, sentence frames, and a 4-step problem-solving protocol**.
What are the five colors used in the system?
Red represents the central angle, blue the inscribed angle, green the arc, purple the chord, and orange the tangent.
What grades is this sample designed for?
It is designed for **Grades 9–10 Geometry**, with suitability also noted for Grade 8 advanced and Grade 11–12 Pre-Calculus review.
What standards are listed?
The sample lists **CCSS.MATH.CONTENT.HSG.C.A.2 and HSG.C.A.3**.
What is included in the full unit?
The full unit includes **7 foldables, a cumulative reflection journal, a 4-section answer key, and teacher notes**, covering the circle-theorem topics listed in the description.
