karenbdeleon27 karenbdeleon27

02-12-2019
Mathematics

contestada

how do i set it up ?

how do i set it up class=

Respuesta :

sqdancefan sqdancefan

02-12-2019

Answer:

m∠A = m∠D = 40°

Step-by-step explanation:

Angles A and D are corresponding angles in the congruent triangles, so have the same measure. You set one measure equal to the other:

x + 20 = 2x

To solve this, subtract x from both sides:

20 = x

Then both angle measures are 2x = 40°.

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