If it's an isosceles triangle and the apex angle is 70 degrees then the base angles will each measure 55 degrees
90 degrees
The angles are 40, 80 and 60 degrees.
If the first two angles of a triangle are 45 degrees and 71 degrees then the 3rd angle is 64 degrees.
41
The idea is that three lines coming out from the center point of a circle (three radii) form three angles -- imagine, for an easy example, the Mercedes-Benz logo. Then the question is: if two of the angles each measure 130 degrees, what does the third angle measure? Well, the first two together measure 260 degrees. So, how many degrees in a circle overall are left, once 260 are taken out? There are 360 degrees in a circle, so the answer is 100.
The angles are: 43 degrees. 38 degrees and 99 degrees which all add up to 180 degrees
The sum of the interior angles of a triangle add up to 180o. So 180 - (45 + 71) = 64o
Let's assume the measure of the first angle is x degrees. The second angle is one-third as large as the first, so its measure is (1/3) * x = x/3 degrees. The third angle is two-thirds as large as the first, so its measure is (2/3) * x = 2x/3 degrees. Therefore, the measures of the angles in the triangle are x degrees, x/3 degrees, and 2x/3 degrees.
The sum of the angles of a triangle equal 180 degrees. The sum of the angles of a quadrilateral equal 360 degrees. To find the measure of an angle for a triangle, you must first be given the other two angle numbers, unless it is an equilateral triangle, in which all angles would equal 60 degrees. To find the measure of a quadrilateral, you must first be given the other three angle numbers, unless it is a square, in which all angles would equal 90 degrees.
The third angle of a triangle is equal to 180 degrees minus (the sum of the first two angles).
If it's a parallelogram then the other 3 angles are 75, 105 and 105 degrees