bikkiecuanas13
02.12.2019 •
Mathematics
Atriangle has two angles measuring 69 and 77. determine the measure of the third angle b
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Ответ:
Step-by-step explanation:
Given measures of 2 angles of a triangle :
m∠A = 69°
m∠C = 79°
Find m∠B.
We know that sum of angles of a triangle =180°
So, we have
Substituting the vales of m∠A = 69° and m∠C = 79°
Adding like terms.
Subtracting both sides by 146°.
∴
(Answer)
Ответ:
90 points
Step-by-step explanation:
90 x .80 = 72 points