Whole numbers with more digits are greater than whole numbers with fewer digits.
Unless there is a decimal making the number have more digits then the answer to the blank would be greater than.
To form a linear pair means that when added, they equal 180 degrees.
but if they have equal measures....180/2 = 90...then they would both equal 90 degrees.....and 90 degrees is a right angle.
So ABC and CBD are both right angles
Draw the number line then put the numbers on the number line by twos. Fore example, 2-4-6-8-10
