SOLUTION: Needing help understanding proof. Statements 1. CD is perpendicular to CE 2. Angle DCE is a right angle 3. ? 4. M Angle DCE = m angle 1 + m

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Question 657289: Needing help understanding proof.
Statements
1. CD is perpendicular to CE
2. Angle DCE is a right angle
3. ?
4. M Angle DCE = m angle 1 + m angle2

5. ?
6. <1 and <2 are complementary
Reasons
1. Given
2. ?
3. Def. of a right angle
4. Addition ?
5. Subsitution
6. Congruent Complements ?
Answer by MathLover1(20850) About Me  (Show Source):
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Statements
1.+CD is perpendicular to CE
2. Angle DCE is a right angle
3. measure of < DCE is =+90°
4. M Angle DCE = m angle 1 + m angle2--->
5. ?---m%28+angle+1%29+%2B+m%28+angle2%29=+90°
6. <1 and <2 are complementary


Reasons
1. Given
2. ?--------+perpendicular+line-segments form right angle(s)
3. Def. of a right angle---Definition of pependicular lines
4. Addition ? Angle addition postulate
5. Subsitution property of (=)
6. Congruent Complements ?---Definition of complementary+angles