50 points! I will mark brainliest and thank you! Random answers will be reported
2 answers:
Answer and explanations:
since the triangle on the right is a right triangle, <CED is 70 degrees too and therefore <DCE is 40 degrees.
Then because of vertical angles, <ACB is also 40 degrees
<BAC is 180 degrees - 40 degrees - 70 degrees = 70 degrees.
Since there are 2 angles that have the same value, the triangle ABC is isosceles. Done!
Step-by-step explanation:
<u>ΔCDE</u>
- CD = CE - given, therefore the triangle is isosceles
- m∠CDE = 70° - given
- m∠DEC = 70° - isosceles triangle has two equal angles opposite to equal sides
- m∠DCE = 180° - 2*70° = 40° - sum of interior angles equals to 180°
<u>ΔABC</u>
- m∠BCA = 40°- as vertical angle with ∠DCE
- m∠ABC = 70° - given
- m∠BAC = 180° - (70° + 40°) = 70° - sum of interior angles equals to 180°
m∠ABC = m∠BAC - the triangle has two equal angles, therefore has two equal sides and is isosceles
You might be interested in
Answer:
4 3/8 < 4 2/3 < 4 5/6 < 5 1/4
Hope it helped!
Step-by-step explanation:
Answer:
B) 2(x+4)
C) 3(3x+5)−7x–7
Step-by-step explanation:
B) 2(x+4) = 2x + 8
C) 3(3x+5)-7x-7
= 9x +15 - 7x - 7
= 9x - 7x + 15 - 7
= 2x + 8
Answer:
$3686 remaining after tax
Step-by-step explanation:
Answer:
(x+7)+3y =
x+7+3y =
2x+14+6y
Step-by-step explanation:
Hope this helps