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Ksju [112]
3 years ago
14

Work out the value of x2x 7xthis is a Co-intirior angle

Mathematics
2 answers:
Olenka [21]3 years ago
7 0

Step-by-step explanation:

The sum of co-interior angle = 180°

Now,

2x + 7x = 180°

9x = 180°

x = 180° ÷ 9

x = 20°

romanna [79]3 years ago
7 0

Answer:

x = 20

Step-by-step explanation:

Co-interior angles (also called <u>same-side interior angles</u>) are two angles that are on the same side of the transversal and on the interior of (between) the two parallel lines.

<u>Same-side interior angles theorem</u>:  If two parallel lines are cut by a transversal, then the same side interior angles are supplementary (add up to 180º).

Therefore, if 2x and 7x are co-interior:

⇒ 2x + 7x = 180

⇒ 9x = 180

⇒ x = 20

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