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Exploring Angles in Shapes
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Exploring Angles in Shapes
📐 Part 1: Angle Knowledge
1. What is the sum of interior angles in a triangle?
90°
180°
270°
360°
2. What is the sum of interior angles in a quadrilateral?
180°
270°
360°
450°
3. Which angle types might you find in a rectangle? (Select all that apply)
Acute angles
Right angles
Obtuse angles
Reflex angles
4. An angle measuring 45° is classified as:
Acute
Right
Obtuse
Straight
🔍 Part 2: Measuring and Calculating
5. In a triangle, two angles measure 60° and 70°. What is the third angle?
Show your working:
Answer: The third angle is _______°
6. A quadrilateral has angles measuring 90°, 85°, and 110°. Calculate the fourth angle.
Show your working:
Answer: The fourth angle is _______°
7. Draw and label an obtuse angle using a protractor. Make sure it measures between 90° and 180°.
My angle measures: _______°
🏟️ Part 3: Real-Life Applications
8. Explain how understanding angles would be useful when designing a sports field or playground.
9. Look around your classroom or school. Name one shape you can see and describe the types of angles it contains.
Shape I found: _________________________
10. If you were building a triangular garden bed and knew two angles were 50° and 80°, what would the third angle be? Explain why this is important for the builder to know.
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