Classify the triangle with angles measuring 21, 69 and 90

Right angled and a scalene triangle

step-by-step explanation:

A right angled triangle is a triangle that has one of its angles to be 90°.

A scalene triangle is a triangle that has all his angles and sides to be different.

Based on the angles of the triangle given i.e 21°, 69° and 90°, the triangle can be classified as a RIGHT ANGLED TRIANGLE because it contains 90° as one of its angles.

The triangle is also classified as a SCALENE triangle because all the angles of the triangle are different i.e no two or three of the angles are the same.

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step-by-step explanation:

because there are always 10 numbers in a phone number.