In the left column, fill in the missing steps of the derivation of the quadratic formula. In the right column, explain the process taken to arrive at that step. The first two rows have been completed for you. In the left column, fill in the missing steps of the derivation of the quadratic formula. In the right column, explain the process taken to arrive at that step. The first two rows have been completed for you.

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step-by-step explanation:

1. 180°. the sum of the interior angles of a triangle is 180°, for the equilateral triangle that it has three equals side is 60°+60°+60°=180°.

2. 60°. each interior angle of a equilateral triangle is 60°

3. 120°. the measure of ∠m is 120°, the sum of the angles ∠m and ∠n is equal to 180°. so, in order to find the measure of ∠m, we have ∠m+∠n=180° > ∠m=180°-∠n > ∠m=180°-60°=120°.

4. 360°. the sum of the exterior angles of an equilateral triangle is ∠m+∠r+∠x=120°+120°+120°=360°. the exterior angles of any triangle always add 360°.

the easiest way to do these would be to solve the equations. if you can solve the equation than you can solve these problems.