Question

Define:
(i) Vertically opposite angles
(ii) Integers

Answer 1

Answer:

When two lines intersect, the opposite (X) angles are equal. ... These X angles are called vertically opposite angles because they are opposite each other at a vertex.

a number which is not a fraction; a whole number. this is called intergers

Step-by-step explanation:

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Answer 2

• Vertically Opposite Angles

When two lines intersect each other, then the opposite angles, formed due to intersection are called vertical angles or vertically opposite angles. A pair of vertically opposite angles are always equal to each other. Also, a vertical angle and its adjacent angle are supplementary angles, i.e., they add up to 180 degrees. For example, if two lines intersect and make an angle, say X=45°, then its opposite angle is also equal to 45°. And the angle adjacent to angle X will be equal to 180 – 45 = 135°.

• Integers

Integer, whole-valued positive or negative number or 0. The integers are generated from the set of counting numbers 1, 2, 3,… and the operation of subtraction. When a counting number is subtracted from itself, the result is zero; for example, 4 − 4 = 0. When a larger number is subtracted from a smaller number, the result is a negative whole number; for example, 2 − 3 = −1. In this way, every integer can be derived from the counting numbers, resulting in a set of numbers closed under the operation of subtraction