The answer is: " 60° " . __________________________________________________________ " m∠A = 60° " . __________________________________________________________ Explanation: __________________________________________________________
Note: All triangles, by definition, have 3 (three) sides and 3 (three angles).
The triangle shown (in the "image attached") has three EQUAL side lengths. Therefore, the triangle shown is an "equilateral triangle" and has 3 (three) equal angles, as well.
All triangles by, definition, have 3 (three) angles that add up to "180° " .
Since each of the 3 (three) angles is equal; and the three angles are:
"∠A" , "∠B" , and "∠C" ;
We can find the measure of "∠A" ; denoted as: "m∠A" ; as follows: ______________________________________________________ m∠A = 180° ÷ 3 =60° . ______________________________________________________ The answer is: " 60° " . ______________________________________________________ m∠A = " 60° " . ______________________________________________________
