Arectangular plot of land has two adjacent sides along highway 400 and highway 401. in the plot is a small lake, with one end 256 m from highway 400 and 108 m from highway 401. find the length of the shortest straight line path, ab, which cuts across the plot, from one highway to the other and just touches the end of the lake

positive

step-by-step explanation:

the quadrant is facing upwards

2

step-by-step explanation:

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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°.