Which correctly describes how to determine the measure of angle 1? the 81° angle and angle 2 are corresponding angles so angle 2 must measure 81°. angles 1 and 2 are supplementary angles so angle 1 must measure 99°. the 81° angle and angle 2 are alternate interior angles so angle 2 must measure 81°. angles 1 and 2 are supplementary angles so angle 1 must measure 99°. the 81° angle and angle 2 are corresponding angles so angle 2 must measure 99°. angles 1 and 2 are supplementary angles so angle 1 must measure 81°. the 81° angle and angle 2 are alternate interior angles so angle 2 must measure 99°. angles 1 and 2 are supplementary angles so angle 1 must measure 81°.

The first one is correct.

The 81° angle and angle 2 are corresponding angles so angle 2 must measure 81°. Angles 1 and 2 are supplementary angles so angle 1 must measure 99°.

Let's go through the rest of them.

The 81° angle and angle 2 are alternate interior angles so angle 2 must measure 81°. Angles 1 and 2 are supplementary angles so angle 1 must measure 99°.

2 isn't an interior angle.

The 81° angle and angle 2 are corresponding angles so angle 2 must measure 99°. Angles 1 and 2 are supplementary angles so angle 1 must measure 81°.

Corresponding angles are congruent, with the same measure.

The 81° angle and angle 2 are alternate interior angles so angle 2 must measure 99°. Angles 1 and 2 are supplementary angles so angle 1 must measure 81°.

81 and angle 2 aren't alternate interior and if they were they'd be congruent.

first, you divide the triangle in two, tô form a retangle triangle. after, using pythagoream theorem:

18^2 = 14^2 + (x/2)^2

(x^2/4) + 196 = 324

x^2/4 = 324 - 196

x^2/4 = 128

x^2 = 512

x = √512

x = √2^9

x = 16√2 cm

i hope i you.