3. No Given: MO I NO; 21 and 22 are adjacent. Prove: mZ1 + m2 = 90 1 2 M M​

y=mx+b

step-by-step explanation:

m slope, b y-intercept

b

step-by-step explanation:

u take $75 minus $60.the anwer/original($75)multiply by 100

the answer is c.

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°.