Second part of the project (finding Unknown Angles)

Topic: Finding Unknown angles

Key Vocabulary: 1. Supplementary Angles : Two Angles are Supplementary when they add up to 180 degrees.

2. Complementary angles: Two Angles are Complementary when they add up to 90 degrees (a Right Angle).

3. Vertical angles: Vertical Angles are the angles opposite each other when two lines cross. They are always equal.

4. Adjacent Angles: Two Angles are Adjacent when they have a common side and a common vertex (corner point), and don’t overlap.

Prior Knowledge: Students should already have a clear idea about ( Acute, Obtuse, Reflex) angles and their measurement. In addition, they should also have had clear idea about the parts of a angle such as  (The corner point of an angle is called the vertex) and ( the two straight sides are called arms) and how to give the angle a name, such as ABC or CBD

1 thought on “Second part of the project (finding Unknown Angles)

  1. Estela Rojas Elgueta


    It is important to consider the background of the students very careful. When you write that “students should already have an idea….” You as a teacher need to figure out how you will get to know how much prior information and knowlegde actually your students already know, and not just assume that they “should” know…


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