4. Escribe las proposiciones compuestas que se indican. p: EI A ABC es equilátero.
q: los tres lados del triángulo tienen igual medida.
r: EI A ABC es equiángulo.
S: EI A ABC es un polígono regular.
a) r^q
b) p → q
c) pvq
d) p^s​

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'.

∠cbe and ∠deb are same-side interior angles.

i took the test

a28=58

step-by-step explanation:

a1=a1+(n-1)d

a28= 4+ (28-1)2

a28=4+(27)(2)

a28=4+54

a28=58