Answer:
angle 1 and and angle 3 are vertical angles.
angle 2 and angle 4 are vertical angles.
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Answer:
square
Step-by-step explanation:
all sides have the same length 
all vertices form 90 degree angles
Answer:
Right triangles are triangles in which one of the interior angles is 90 degrees, a right angle. Since the three interior angles of a triangle add up to 180 degrees, in a right triangle, since one angle is always 90 degrees, the other two must always add up to 90 degrees (they are complementary).
The side opposite the right angle is called the hypotenuse. The sides adjacent to the right angle are the legs. When using the Pythagorean Theorem, the hypotenuse or its length is often labeled with a lower case c. The legs (or their lengths) are usually labeled a and b.
Step-by-step explanation:
pls mark as brainliest
16.89 x 78.91 = 1,332.7899
I'm not sure what it is equivalent to.
