Question

In the diagram a II b, use the diagram to answer the question. if m∠6=21, what is m∠4?

Answer 1

$m< 6+ m< 8 = 180$

$21+ m < 8 = 180$

$m$

$m$

So,

$m$ and $m < 8$ [corresponding angles]

$m$

Answer 2

$\\ \tt\hookrightarrow m$

$\\ \tt\hookrightarrow 21+m$

$\\ \tt\hookrightarrow m$

$\\ \tt\hookrightarrow m$

Now

• m<4 and m<8 are corresponding angles
• m<4=m<8=159°