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Discovering Geometry Day 2 1.2 Poolroom Math o Daily Openers o Check homework 1.2 Poolroom Math angle – two rays with a common endpoint. Rays cannot be collinear. vertex – the common endpoint of the two rays. sides – the two rays of the angle. Ex. Name the angle in different ways. Ex. Name all the angles in the figure. measure of an angle – smallest amount of rotation from one ray to the other. – measured in degrees. – by definition its measure would be between 0° and 180° reflex measure – largest rotation less than 360° between two rays. Ex. Find the measure of the angle, and its reflex measure. Have students draw a few angles and measure them. Have students come to the overhead and measure the angles that I have drawn. congruent – two angles that have equal measure. angle bisector – a ray that passes through the vertex of an angle and divides the angle into 2 ’s. Review incoming angle and outgoing angle on page 41 m incoming = m outgoing Homework – pages 42–45 #1–40 all Daily Openers – 1. Simplify: 2. Simplify: 180 4 3 3. Find the slope of the line: 10y – 24x = -70 4. Solve: 43x 8 52x 4 16 5. Solve: 4x 9 y 1 6 y 4 x 2