The number in the blanks represents

Blank 1 : 3

Blank 2: 3

Step-by-step explanation:

Let the unknown number for blank 1 be x.

The given problem is

Divide both sides by 4.

The answer for blank 1 is 3.

Let the unknown number for blank 2 be y.

The answer for blank 2 is 3.

The number in the blanks represents the same number.

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°.