Online Quiz: Test Your Angle Estimation Skills for 7th Graders

📚 Quick Study Guide

• 📐 An angle is formed by two rays sharing a common endpoint called the vertex.
• 📏 Angles are measured in degrees (°).
• острый A acute angle is less than 90°.
• 🛄 A right angle is exactly 90°.
• ↔️ An obtuse angle is greater than 90° but less than 180°.
• ➡️ A straight angle is exactly 180°.
• 🔄 A reflex angle is greater than 180° but less than 360°.
• 💡 To estimate angles, compare them to known angles like 45°, 90°, and 180°.

📝 Practice Quiz

1. What type of angle measures less than 90°?
   1. Acute
   2. Obtuse
   3. Right
   4. Straight
2. Which of the following is a right angle?
   1. $45^\circ$
   2. $90^\circ$
   3. $120^\circ$
   4. $180^\circ$
3. An angle measures 135°. What type of angle is it?
   1. Acute
   2. Right
   3. Obtuse
   4. Straight
4. What type of angle measures exactly 180°?
   1. Acute
   2. Obtuse
   3. Right
   4. Straight
5. Estimate the angle shown below. (Imagine an angle slightly larger than a right angle)
   1. $45^\circ$
   2. $60^\circ$
   3. $90^\circ$
   4. $100^\circ$
6. Which angle is greater than 180 degrees but less than 360 degrees?
   1. Acute
   2. Obtuse
   3. Reflex
   4. Straight
7. What is the name for an angle that is exactly 90 degrees?
   1. Acute
   2. Obtuse
   3. Right
   4. Straight