what are angles in the form of 7 grade
Answers
Answer:
Adjacent angles are two angles that share a common vertex and a common side, but do not overlap. Angles 1 and 2 are adjacent angles.
Supplementary angles are two angles whose measures have a sum of 180°. Angles 3 and 4 are supplementary angles.Complementary angles are two angles whose measures have a sum of 90°. Angles 5 and 6 are complementary angles.
Vertical angles are the opposite angles formed by the intersection of two lines. Vertical angles are congruent. Angles 1 and 2 are vertical angles. Angles 3 and 4 are also vertical angles.
Goals and Learning Objectives
Measure angles with a protractor and estimate angle measures as greater than or less than 90°.
Understand the definition of vertical, adjacent, supplementary, and complementary angles.
Explore the relationships between these types of angles.
Think About Angles
Lesson Guide
After students see the opening figure, ask them how they could describe the figure.
SWD: Though informal, discuss as an introduction/preview for students with disabilities. Emphasize they will be introduced to angle relationships. This will support students as they work to determine salient information throughout the lesson.
Mathematics
Students may see the following and should include in their discussion their explanations of how they came to those conclusions:
An acute angle and an obtuse angle
Two angles that share a common side
Two angles that are supplementary
A straight angle
Estimated angle measures—perhaps 60° and 120°
ELL: Thinking aloud is one strategy for making learning visible. When teachers think aloud, they are externalizing their internal thought processes. Doing so may provide students with insights into your mathematical thinking and ways of estimating angle measures. It also helps to model accurate mathematical language.
Opening
Think About Angles
Describe the angle(s) in this figure.
Discuss your ideas with your class.
Types of Angles
Teacher Demo
Measure the angle(s) to demonstrate and review how to use a protractor. Discuss the size of each angle relative to 90° and the fact that the angles add up to 180°. When measuring the angles, review how angles are named.
SWD: As you model how to measure angles given using a protractor, make sure that you are annotating the steps you use to measure angles.