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Each angle of a rectangle measures how many degrees?
Each angle of a rectangle measures 90 degrees.
What are the measures of the Base angles of an isosceles triangle whose vertex angle has measure of 55?
Each base angle is 62.5 degrees
The measure of the vertex angle of an isosceles triangle is 15 degrees more than the measure of each base angle. Find the number of degrees in each angle of the triangle.?
Let x be the measure of the base angle in degrees, so the measure of the vertex angle in degrees it will be x + 15. Since the triangle is an isosceles triangle, where the base angles are congruent, we can form the equation: 2x + (x + 15) = 180 3x + 15 = 180 subtract 15 to both sides; 3x = 165 divide by 3 to both sides; x = 55 x + 15 = 55 + 15 = 70 Thus, each base angle is 55° and the vertex angle is 70°.
What is the measure of the base angle of an isosceles triangle if the measure of the vertex angle is 42 degrees and the two congruent sides each measure 21 units?
If it is an isosceles triangle then the base angles must be equal angles of 69 degrees because there are 180 degrees in a triangle and 42+69+69 = 180 degrees
What is the measure of a vertex angle in a regular 12-gon?
180 degrees( 12-2)=1800degrees This is the sum of the interior angles. So divide 1800 by 12 and have the measure of each angle.
