What is the area of the triangle in the diagram? OA. ( - Y₂) (x2 - y₂) OB. Žy (42 - 31) oc. (az - x₂) 1 OD. 2/ (+ / 2 - y²) (+ / - y2)​

step-by-step explanation:

10.50 + taxes which added up to 11.50

answer: 8d

step-by-step explanation:

45+5= 50+5=55+5=60

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°.