Question

triangle angles sum to: a) 90 b) 180 c) 270 d) 360
a right angle is: a) 45 b) 60 c) 90 d) 180

Explanation:

First Question (Triangle angles sum to):

The sum of the interior angles of a triangle is a fundamental geometric concept. By the triangle angle - sum theorem, the sum of the three interior angles of any triangle is equal to \(180^{\circ}\). Option A (\(90^{\circ}\)) is too small, option C (\(270^{\circ}\)) and option D (\(360^{\circ}\)) (which is the sum of interior angles of a quadrilateral) are incorrect.

A right angle is defined as an angle whose measure is \(90^{\circ}\). An angle of \(45^{\circ}\) is an acute angle, an angle of \(60^{\circ}\) is also an acute angle, and an angle of \(180^{\circ}\) is a straight angle, not a right angle.

Answer:

B) 180

Second Question (A right angle is):