Proving Statements About Angles

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Presentation transcript:

Proving Statements About Angles Chapter 2 Section 2.6-Part 1 Proving Statements About Angles

Warm-Up Find the measure of each angle. A right angle The complement of 42° The supplement of 42° Two congruent angles that are complementary Two congruent angles that are supplementary

Definitions

A mA = 90° A mA < 90° A is acute A 90° < mA < 180° A is obtuse

Use the diagram to decide whether the statement is true or false

Make sketch of the given information label all angles that can be determined 42° 42°

Make sketch of the given information label all angles that can be determined 90° 42° 138° 42° 138°

Solve for x

Solve for x

Write a Two Column Proof Statements Reasons 1. 2  3 2. 1  2 4  3 3. 1  3 4. 1  4