Segments, Rays & Angles

1. Segments, Rays & Angles endpoint Description – a point at the end of a segment or the starting point of a ray - Real world example Drawing – • Notation

2. Segments, Rays & Angles segment Description – part of a line consisting of two endpoints and all points between them - Real world example Drawing – • Notation

3. Segments, Rays & Angles ray Description – part of a line consisting of one endpoint and all points of the line on one side of the line - Real world example Drawing – • Notation

4. Segments, Rays & Angles opposite rays Description – two collinear rays with the same endpoint; they always form a line - Real world example Drawing – • Notation

5. Segments, Rays & Angles angle Description – formed by two rays (sides) with the same endpoint (vertex) - Real world example Drawing – • Notation

6. Segments, Rays & Angles vertex Description – the common endpoint of the sides of the angle - Real world example Drawing – • Notation

7. Segments, Rays & Angles acute angle Description – an angle whose measure is less than 90° - Real world example Drawing – • Notation

8. Segments, Rays & Angles obtuse angle Description – an angle whose measure is greater than 90° but less than 180° - Real world example Drawing – • Notation

9. Segments, Rays & Angles straight angle Description – an angle whose measure is exactly 180° - Real world example Drawing – • Notation

10. Segments, Rays & Angles right angle Description – an angle whose measure is exactly 90° - Real world example Drawing – • Notation

11. Segments, Rays & Angles • Name all the angles shown in each drawing. HINT: There are 5 different angles in the first figure and 3 different angles in the second figure. • Name each angle in three different ways.

12. Segments, Rays & Angles

13. Segments, Rays & Angles • Find the measure of each angle. • mAQB = • mAQC = • mXQA = • mAQY = • mZQY = • mZQX = • mCQB = • mXQY =

14. Segments, Rays & Angles • Which angle below has the greater measure, SML or BIG? • Why?