geometry: 1.4 angle measure notes objectives: the student ... · geometry: 1.4 angle measure notes...
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Geometry: 1.4 Angle Measure NOTES
Objectives: The student will be able to
x Measure and classify angles x Identify and use congruent angles and the bisector of an angle
Vocabulary
Word Definition Example Ray
Opposite Rays
Angle
Sides
Vertex
Interior
Exterior
Geometry: 1.4 Angle Measure NOTES
Example 1: Angles and Their Pairs
a) Name all the angles that have B as a vertex.
b) Name the sides of <5
c) Write another name for <6
d) Which angle has point X as a vertex?
e) Which ray is a side of <3
f) Which of the following is another name for <3
Right Angle Acute Angle Obtuse Angle
Geometry: 1.4 Angle Measure NOTES
Example 2: Measure and Classify Angles
1) Classify each angle as right, acute or obtuse. Then use a protractor to measure the angle to the nearest degree.
a) <TYV b) <WYT c) <TYU
Word Definition Example Congruent Angles
Angle Bisector
Geometry: 1.4 Angle Measure NOTES
Example 3: Measure and Classify Angles
a) Wall stickers of standard shapes are often used to provide a stimulating environment for a young child’s room. A five-pointed star sticker is shown with vertices labeled. Find m<GBH and m<HCI if < 𝐺𝐵𝐻 ≅ < 𝐻𝐶𝐼 , m<GBH = 2x + 5, and m<HCI = 3x - 10.
b)
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