In this math video we will identify and use facts about vertical, complementary & supplementary angles to solve problems. We will review the definition of an angle. We will draw an angle from two rays and a vertex. We will draw intersecting lines that meet at a vertex and form angles. We will understand that vertical angles are formed by intersecting lines. Vertical angles are opposite each other, share a common vertex and are congruent. We will learn that complementary angles are two angles whose sum is 90 degrees. We will learn that complementary angles could be two angles that are adjacent angles. We will learn that supplementary angles are two angles whose sum is 180 degrees. Student practice problems are throughout the lesson. Exemplar solutions are modeled and explained.
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00:00 Introduction
00:14 Lesson Objectives
00:30 Essential Question
00:47 What is an Angle?
01:45 Vertical Angles
02:51 Student Practice #1
03:38 Student Practice #2
04:08 Student Practice #3
05:28 Complementary & Supplementary Angles
06:52 Adjacent Angles
08:21 Student Practice #4
09:46 Student Practice #5
11:22 Conclusion
Geometry
Solve real-life and mathematical problems involving angle measure, area, surface area, and volume.
7.G.B.5 Use facts about supplementary, complementary, vertical, and adjacent angles in a multi-step problem to write and solve simple equations for an unknown angle in a figure.