Yu-Xi draws triangle with two angles measuring 79° and 23°. What is the measures, in degrees, of the third angle? ​

79+23=102

180-102=78

the third angle is 78 degrees

The answer is A. 78 degrees!

Step-by-step explanation:

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c. 27 units.

step-by-step explanation:

we are told that in circle a, ∠bae ≅ ∠dae.

we can see from our given diagram that in and ;

, as these are radii of our given circle.

therefore, by sas congruence postulate.

hence, side be will be equal to side de as corresponding parts of congruent triangles are congruent. so we can set an equation to find the value of x as:

now let us substitute x=17 in the expression for the length of be.

therefore, length of be will be 27 units and option c is the correct choice.