Both base angles of an Isosceles triangle are by definition the same and, as the internal angles of a triangle must ad up to 180 degrees (again by definition), the the 3rd angle must = 180 - 2 times Y,
(180 - 38)/2 = 71 degrees (base angles of an isosceles triangle are congruent).
63 degrees
57.5 degrees
84 degrees
84 degrees
(180 - 38)/2 = 71 degrees (base angles of an isosceles triangle are congruent).
63 degrees
57.5 degrees
84 degrees
84 degrees
The vertex angle of an isosceles triangle is equal to the measure of each of its base angles. Therefore, if one of the base angles measures 42 degrees, then the vertex angle also measures 42 degrees.
80 degrees.
If your "53" is in degrees, then the vertex angle is 74 degrees.
130 degrees is the measure of the base angles of an isosceles triangle whose vertex has a measure of 50 degrees.
40 degrees each
Its 2 equal base angles will each measure 65 degrees
84 degrees 180-48-48 = 84