Question

Hurry! 30 POINTS! What is A. 20º
B. 70º
C. 90º
D. 180º

Answer 1

ME = 70*
MA = 20*
MD = 90*
MB = 90*

Step-by-step explanation:
The interior angles of any given triangle will add up to 180*
And the angles of two similar triangles are congruent.
Hope this helps!

Answer 2

m∠DEA=70. So, the correct answer is:B. 70

To determine m∠DEA, we need to use the fact that the angles in a triangle add up to 180 .

Since ∠BCA=70 and ∠CDE and ∠DEA form a linear pair, the sum of their measures is

m∠CDE+m∠DEA=180

Given that m∠BCA=70 , we can find

m∠CDE as follows:

m∠CDE=180 −m∠BCA

m∠CDE=180 −70

m∠CDE=110

Now, since ∠CDE and ∠DEA form a linear pair,

m∠CDE+m∠DEA=180 . We know

m∠CDE=110 , so:

110 +m∠DEA=180

Now, solve for

m∠DEA:

m∠DEA=180 −110

m∠DEA=70

So, the correct answer is:B. 70

Question

What is m∠DEA ? given BCA= 70

A. 20º

B. 70º

C. 90º

D. 180º