Question

In DEF, <D = 40°, <E = 50°, find measure of <F?​

Answer 1

Answer:

<F= 90°

Step-by-step explanation:

In DEF,

<D + <E + <F= 180°....sum of measures of angles in a triangle

40+ 50 +<F= 180°

90°+ <F = 180°

<F = 180°-90°

<F = 90°

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