SWBAT… … find the measures of angles of triangles using the Triangle Sum Theorem and Triangle Exterior Angle Theorem Agenda 1. Warm-up (10 min) 2. Review HW (20 min) 3. New notes / exit slip (5 – 15 min) Warm-Up: 1. What is 80% of 90% of 10? 2. What is 20% of 15% of 100? 3. What is 25% of 70% of 150? (round to nearest tenth) HW: Read Pgs 353-355 Do Pg. 356 #1-#3 Quiz Thursday! Mon, 2/3
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SWBAT… … find the measures of angles of triangles using the Triangle Sum Theorem and Triangle Exterior Angle Theorem Agenda 1. Warm-up (10 min) 2. Review.
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SWBAT… … find the measures of angles of triangles using the Triangle Sum Theorem and Triangle Exterior Angle Theorem Agenda 1. Warm-up (10 min)2. Review HW (20 min)3. New notes / exit slip (5 – 15 min)
Warm-Up:
1. What is 80% of 90% of 10?
2. What is 20% of 15% of 100?
3. What is 25% of 70% of 150?
(round to nearest tenth)HW: Read Pgs 353-355
Do Pg. 356 #1-#3Quiz Thursday!
Mon, 2/3
The sum of the interior measures of the angles of a triangle is 180 degrees.
Triangle Sum Theorem
The measures of each exterior angle of a triangle equals the sum of the measures of its two remote interior angles.
Triangle Exterior Angle Theorem
Review HW:Page 175: #1 – #21 ALL
Page 177: #29 – #32 ALL
Exit Slip: ½ sheet – Collected1.) Find the value of x, y, and z?
3.) Find m<1 and m<2.2.) Find the value of x
Summary
Be VERY specific!1. Sum of interior angles of a triangle = 1800
2. Exterior angle = Sum of interior angles in triangle
SWBAT… find the sum of the measures of interior and exterior angles of a polygon. Agenda 1. Warm-up / HW Check (10 min)2. New notes / practice problems (40 min)