Angle measures of Triangles 1. The sum of the three angles of any triangle is
2. If you know the measure of twd angles of a triangle, you can
find the missing angle by writing and solving an
3. You can tell if three angle measures could form a
by checking to see if the angles add up to be
180°

b. an equilateral triangle inscribed in a circle

step-by-step explanation:

we are given the figure of two circles having a triangle inside.

now, we know that,

"when a figure is lying inside an another figure, then the outside figure is known as circumscribed figure and the figure lying inside is referred to as the inscribed figure".

as we see that, the circles are containing the triangle completely.

thus, the circles are the circumscribed figures and the triangle is the inscribed figure.

hence, we get, 'an equilateral triangle is inscribed in a circle'.