Р 9
130°
which lines are parallel? Justify your answer.
O Lines p and q are parallel because same side
interior angles are congruent.
O Lines p and q are parallel because alternate
exterior angles are congruent
O Lines land m are parallel because same side
interior angles are supplementary
O Lines I and m are parallel because alternate interior
angles are supplementary.
130°
m
80°

step-by-step explanation:

what does 'mandy have ben 780 bottle caps. ' mean?

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°.

answer: 180 degrees clockwise

step-by-step explanation: