Question

1. Two angles of a triangle are 72º and 63º. Find the third angle.
(I am in sixth so please tell ans to my level)​

Answer 1

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Let the third angle be x.

By using Angle sum property of the triangle,

$\implies$ x + 72 + 63 = 180

$\implies$ x + 135 = 180

$\implies$ x = 180 -135

$\implies$ x = 45°

Hence, the third angle is 45°.

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Answer 2

$\huge\underline\red{Solution}$

Let the third angle be x

According to angle sum property of a triangle,

A + B + C = 180⁰

72⁰ + 63⁰ + x = 180⁰

135⁰ + x = 180⁰

x = 180⁰- 135⁰

x = 45⁰

Therefore the third angle, C = x = 45⁰