Triangle ABC is translated by the rule (x + 1. y + 1) and then dilated by a scale factor of 2 centered at the origin. Which statement describes the properties of triangles ABC
and A"B"C" after the transformations?
ZC and 2C" are congruent after both the translation and the dilation
2C and 2C" are congruent after the dilation, but not after the translation
AC and A"C" are congruent after both the translation and the dilation
AC and A"C" are congruent after the dilation, but not after the translation.

answer: -1

step-by-step explanation:

its an acute right triangle

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°.