Answer:
No
Step-by-step explanation:
A^2+b^2=c^2
8^2+15^2=20^2
64+225=400
289=400
289 does not equal 400 so it is not a right triangle
Answer:
A — conclusion: the lines are perpendicular and meet at a 90 angle
m < DAB + m < ADC = 180 (because ABCD is a parallelogram)
so m < ADC = 180 -112 = 68 degrees
Therefore m < ADB = 68 - 27 = 41 degrees (answer)
