Respuesta :

shivalimbu466

Answer:

A straight angle is the same as half the circle and is 180° whereas a right angle is a quarter of a circle and is 90°. You measure the size of an angle with a protractor. Or could be shown by an arc on the figure to indicate which angles that are congruent

gayanepoghosyan
C=180-102=78
d=180-92=88
a+140=2*102 => a=204-140=64
a+b=2d=176 => b=176-64=112