Answer:
AB ║ CD. (Proved)
Step-by-step explanation:
See the attached diagram of the triangle.
It is given that Δ ACD is an isosceles triangle.
Therefore, AC = AD and ∠ ACD = ∠ ADC, ⇒ ∠ 3 = ∠ 4 .......... (1)
Again, given that ∠ 1 = ∠ 3 ........... (2)
Now, from equations (1) and (2) we can write, ∠ 1 = ∠ 4
Now, AB and CD are two straight lines and AD is the transverse line and hence, ∠ 1 and ∠ 4 are alternate angles that are equal.
Therefore, AB and CD are parallel straight lines and AB ║ CD. (Proved)
Answer:-αx-20=-14 --> 
4=
×+5 --> a=-6
7+2ax=13---> a=
Step-by-step explanation:
Answer:
The x-intercept is (-2,0)
Step-by-step explanation:
48:42
16:14
56:49
I hope this helps.
Answer:
120 degrees.
Step-by-step explanation:
Angles in a triangle add up to 180 degrees and triangle BWA is an isosceles triangle, meaning that AW and BW are congruent, or equal in length to each other.
This also means that angle WBA and WAB are congruent to each other. Angle WAB is 30 degrees, so angle WBA is also 30 degrees.
Knowing that angles in a triangle add up to 180 degrees we have 30+30+BWA=180.
60+BWA=180.
BWA=120 degrees.
Hope this helps!
