Per current school question and answer enquired students to say what they think is the most crucial important concern for a student to do in order to gain success. The one which response stood out from the rest was practice. People who are definitely successful do not become successful by being born. They work hard and dedicate their lives to succeeding. If you tend to reach your goals, keep this in mind! following some question and answer examples that you could utilise to boost your knowledge and gain insight that will help you to maintain your school studies.

## Question:

What is the measure of ∠ADC in quadrilateral ABCD?

## Answer:

It is only **possible **when the value of **x **is **115 degrees **since side AB and CD are **congruent. **Thus, the value of** ∠ADC **is **115 degrees.**

**ABCD **is the **quadrilateral **given in the question in which AD is **parallel **to BC, and AB is equal to CD. The value of angle BAC is given **115 degrees.**

We need to **determine **the value of the **∠ADC.**

Now,

Let us assume the value of **∠ADC is x.**

The **exterior **angle of C and the ∠CDA are alternate **interior angles. **Thus, the value of the **exterior **angle of C is also **x.**

We know that sum of **interior **and **exterior **angles is always **180 degrees.**

Thus, the value **of ∠DCB **is (180-x).

The **exterior **angle of B and **the ∠BAD **are alternate **interior **angles. Thus, the value of the **exterior **angle of B is also **115 degrees.**

Thus, the value **of ∠ABC **is (180-115) which is equal to **65 degrees.**

Now, the **sum **of all the angles of the **quadrilateral **is always equal to **360 degrees.**

Therefore,

To know more about **quadrilaterals**, please refer to the link:

They could certainly hopefully help the student take care of the question by using the questions and answer examples. Then can make some sharing in a group discussion and also study with the classmate around the topic, so another student also ought to have some enlightenment and still keeps up the school learning.