1. 1.3: Measuring and Constructing Angles

2. An __angle_ is two rays
with a common endpoint.

3. Parts of an angle
Sides- Rays
Vertex- initial pt (endpoint) of each ray
Interior Points- points between the sides
Exterior Points- points outside the angle

4. Name the following:
~the angle in three ways
~the vertex
~the sides
~an interior point
~an exterior point
~a point on angle (besides vertex)

5. Name the following:
~The angle.
~The vertex of the angle.
~The sides of the angle.
~A point in the interior of the angle.
~A point in the exterior of the angle.
~A point on the angle besides the vertex.

7. List all the angles that can be named using only one vertex letter.

8. The measure of an angle is the ROTATION __rotation_ between the two sides.

9. Postulate 3 – Protractor Postulate

10. Use the protractor to figure out the measure of the angle named.

11. Which angle is bigger?
<SML or <BIG

12. Adjacent Angles are two angles
with a common side, a common
vertex, and no common interior points.

13. Postulate 4 – Angle Addition Postulate
Two adjacent angles may be added to get a total.

14. Use the Angle Addition Postulate to find the measures of the unknown angle.

15. Find the value of x if m<AXB = 180o. Find m<AXC and m<CXB.

16. Classifying Angles
Acute-
Obtuse-
Right-
Straight-

17. Are points P, X, and H collinear?
Using the numbered angles, name an
acute angle.
obtuse angle.