Question

10.
The measures of two angles of a triangle are 70
and 55. This triangle is
A.
a right triangle
B.
a scalene triangle
C.
an obtuse triangle
D.
an isosceles triangle

Answer 1

Answer:

D. Isosceles triangle

Step-by-step explanation: Triangles have 180 degrees. To figure out this question you have to find the measure of the last angle. 70+55=125. 180-125=55. So the angles are 70, 55, 55. In an isosceles triangle two sides are equal. Because we know that two angles in the triangle are equal we then know that two sides of the triangle are also equal. Hope this helped :)