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Help please. Us the diagram to find the measure of each arc. Give an 80 and MUR diameters measurement of angle BRT was 80° and measurement of angle ARM equals 60°.

Help please Us the diagram to find the measure of each arc Give an 80 and MUR diameters measurement of angle BRT was 80 and measurement of angle ARM equals 60 class=

Respuesta :

(I) BT = 80°

(II) AUB = 240°

(III) MB = 60°

Explanation:

Given:

∠ARM = 60°

∠BRT = 80°

(i) BT = ?

According to the figure, BT = 80°

(ii) AUB = ?

∠MRB = 180 - ( 80 + 60 )

∠MRB = 180 - 140

∠MRB = 60°

AUB = 360 - ( 60 + 60 )

AUB = 360 - 120

AUB = 240°

(III) MB = ?

MB = 180 - ( AM + BT )

MB = 180 - ( 80 + 60 )

MB = 180 - 140

MB = 60°

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