1. <2 congruent <4 Given
2. m<2 =m<4 Angle congruence postulate
3. <2 and <3 are supplementary
4. m<2+m<3=180 Definition of supplementary angles
5. m<1 and m<4 are supplementary
6. m<1+m<4=180 Definition of supplementary angles
7. m<1 + m<4 = m<2 + m<3
8. m<1 + m<4 = m<4 + m<3
9. m<1 = m<3
10. <1 congruent with = and little line on top of the equal <3

help me with 5,7,8,9,10
pizz thanx

To find the extreme values of a function f(x.y) on a curve x-x(t), y y(t), treat f as a function of the single variable t and use the chain rule to find where df/dt is zero. in any other single-variable case, the extreme values of f are then found among the values at the critical points (points where df/dt is zero or fails to exist), and endpoints of the parameter domain. find the absolute maximum and minimum values of the following function on the given curves. use the parametric equations x=2cos t, y 2 sin t functions: curves: i) the semicircle x4,y20 i) the quarter circle x2+y-4, x20, y20 b, g(x,y)=xy

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