Question 657289

 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( angle 1) + m( angle2)= 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