Question

plz help by doing this ​

Answer 1

Hello mate..

Here Is Your Answer:

1. Euclid.
2. 3
3. 13
4. Point, plane, line (All the above)
5. All the above.
6. 1
7. 50

8. The angles of the triangle = 180°

$(2x°) + (3x + 5)° + (4x - 14) = 180° \\ 9x - 9 = 180 \\ 9x = 180 + 9 \\ 9x = 189 \\ x = \frac{189}{9} \\ x = 21$

Therefore x = 21

9. straight angle = 180°

y = 180 - 140

y = 40

sum of Angles in a triangle = 180°

$30 + 40 + \alpha = 180 \\ 70 + \alpha = 180 \\ \alpha = 180 - 70 = > 110 \\ therefore \: \alpha = 110°$

$supplementary \: angle = 180° \\ 110 + x = 180 \\ x = 180 - 110 = > 70° \\ therefore \: x = 70°$

HOPE THIS HELPS YOU..

Answer 2

Hey Mate here is your answer

1. Euclid.
2. 3.
3. 13.
4. all the above.
5. all the above.
6. 1.
7. 50.
8. 21.
9. 70⁰.

Hope this helps you.

Mark the answer as brainliest.