Answer:
Step-by-step explanation:
Use Pythagorean theorem,
Base² + altitude² =hypotenuse²
x² + 19² = 21²
x² + 361 = 441
x² = 441 - 361
x² = 80

Answer:
the asnwer is YES
Step-by-step explanation:
Answer:
m∠JKI: 43°
Explanation:
As its an isosceles triangle, m∠JKI = m∠JIK
m∠JKI:



1. HI Because two parallel lines have to be on the same plane and never intersect.
2. Skew means the never intersect and they aren't on the same plane so it is GK and DH
3. Angle 3 corresponds because it is the bottom left and 7 is the bottom left.
4. 3 and 5 are same-side interior because they are both on the left side and both are inside.
Hope this helps!
Answer:
B
Step-by-step explanation:
One is multiplying by 1/2