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Explore sketching geometric figures: two non-intersecting segments, two non-intersecting lines, one intersecting line, angles between rays from same point. Discover vertex sides and spatial relationships. Practice postulates and angles measurement.
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Week 1 Warm Up 08.19.11 sketch the figure described: 1) two segments that do not intersect 2) two lines that do not intersect, and one that intersects both.
Angle two different rays that have the same point • C Vertex Sides Ex 1 • A B
Ex 2 • • • P S R Q or PQS PQS or RQS SQR or RQP PQR Q
Postulate 3 Protractor Postulate The measure of ∠ABC is the absolute value of the difference between the numbers of BA and BC. A • Ex 3 C • B
90º Degrees 0º A 180º