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Question

Étapes de solution

1. Understand the question

   look at the protractor on the right. find the measure of each angle

   1. $\\angle koj$
   2. $\\angle koh$
   3. $\\angle goj$
   4. $\\angle goh$

   draw and name each angle.

   1. $50^\\circ$
   2. $135^\\circ$

   classify each angle. write acute, right, obtuse, or straight.
   7.

   1. $135^\\circ$
   2. $180^\\circ$

   draw each angle. then, name the angle.

   1. obtuse
   2. right
   3. acute
   4. straight
2. Explanation

   Step1: Read ∠KOI on protractor

   Ray OK aligns with 0° on the protractor, ray OI aligns with 90°. The angle is $90^\circ - 0^\circ = 90^\circ$.

   Step2: Read ∠KOH on protractor

   Ray OK aligns with 0°, ray OH aligns with 100°. The angle is $100^\circ - 0^\circ = 100^\circ$.

   Step3: Read ∠GOJ on protractor

   Ray OG aligns with 180°, ray OJ aligns with 160°. The angle is $180^\circ - 160^\circ = 20^\circ$.

   Step4: Read ∠GOH on protractor

   Ray OG aligns with 180°, ray OH aligns with 100°. The angle is $180^\circ - 100^\circ = 80^\circ$.

   Step5: Describe 50° angle drawing

   Draw 2 rays from a vertex, measure 50° between them. Name it, e.g., ∠ABC.

   Step6: Describe 135° angle drawing

   Draw 2 rays from a vertex, measure 135° between them. Name it, e.g., ∠DEF.

   Step7: Classify 90° angle

   90° angles are defined as right angles.

   Step8: Classify 135° angle

   135° is between 90° and 180°, so it is obtuse.

   Step9: Classify 180° angle

   180° angles are defined as straight angles.

   Step10: Describe obtuse angle drawing

   Draw 2 rays from a vertex, measure an angle between 90° and 180° (e.g., 120°). Name it, e.g., ∠GHI.

   Step11: Describe right angle drawing

   Draw 2 perpendicular rays from a vertex (90°). Name it, e.g., ∠JKL.

   Step12: Describe acute angle drawing

   Draw 2 rays from a vertex, measure an angle between 0° and 90° (e.g., 30°). Name it, e.g., ∠MNO.

   Step13: Describe straight angle drawing

   Draw 2 opposite rays from a vertex (180°). Name it, e.g., ∠PQR.

3. Final answer
   1. $90^\circ$
   2. $100^\circ$
   3. $20^\circ$
   4. $80^\circ$
   5. (Draw two rays meeting at a vertex with a 50° opening; example name: $\angle ABC$)
   6. (Draw two rays meeting at a vertex with a 135° opening; example name: $\angle DEF$)
   7. right
   8. obtuse
   9. straight
   10. (Draw an angle between 90° and 180°, e.g., 120°; example name: $\angle GHI$)
   11. (Draw a 90° angle; example name: $\angle JKL$)
   12. (Draw an angle between 0° and 90°, e.g., 30°; example name: $\angle MNO$)
   13. (Draw a 180° straight angle; example name: $\angle PQR$)

Réponse

Question Analysis

OCR Text

look at the protractor on the right. find the measure of each angle
1. $\\angle koj$
2. $\\angle koh$
3. $\\angle goj$
4. $\\angle goh$
draw and name each angle.
5. $50^\\circ$
6. $135^\\circ$
classify each angle. write acute, right, obtuse, or straight.
7.
8. $135^\\circ$
9. $180^\\circ$
draw each angle. then, name the angle.
10. obtuse
11. right
12. acute
13. straight

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