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MATH / The right pyramid shown has a square base and all eight of its edges are the…

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Answer published by the source. Consult the official source to check your work against its answer.

problem

The right pyramid shown has a square base and all eight of its edges are the same length. What is the degree measure of angle ABDABD?[asy]size(100); import three; defaultpen(linewidth(0.7)); currentprojection = orthographic(0.8,-1,0.15); pen sm = fontsize(8); triple A = (.5,.5,1), B = (0,0,0), C = (1,0,0), D = (1,1,0), E = (0,1,0); /* should be A = (.5,.5,1/2^.5) */ draw(A--B--C--D--A--C); draw(A--E--D,linewidth(0.7)+linetype("3 3")); draw(B--E,linewidth(0.7)+linetype("2 2")); label("A",A,N,sm); label("B",B,S,sm); label("C",C,S,sm);label("D",D,(1,0),sm);label("E",E,NW,sm); [/asy]
Plain-text mathematical notation (without MathML)
The right pyramid shown has a square base and all eight of its edges are the same length. What is the degree measure of angle ABD?[asy]size(100);
import three; defaultpen(linewidth(0.7)); currentprojection = orthographic(0.8,-1,0.15);
pen sm = fontsize(8); triple A = (.5,.5,1), B = (0,0,0), C = (1,0,0), D = (1,1,0), E = (0,1,0); /* should be A = (.5,.5,1/2^.5) */
draw(A--B--C--D--A--C); draw(A--E--D,linewidth(0.7)+linetype("3 3")); draw(B--E,linewidth(0.7)+linetype("2 2"));
label("A",A,N,sm); label("B",B,S,sm); label("C",C,S,sm);label("D",D,(1,0),sm);label("E",E,NW,sm);
[/asy]
Original LaTeX notation
The right pyramid shown has a square base and all eight of its edges are the same length. What is the degree measure of angle $ABD$?[asy]size(100);
import three; defaultpen(linewidth(0.7)); currentprojection = orthographic(0.8,-1,0.15);
pen sm = fontsize(8); triple A = (.5,.5,1), B = (0,0,0), C = (1,0,0), D = (1,1,0), E = (0,1,0); /* should be A = (.5,.5,1/2^.5) */
draw(A--B--C--D--A--C); draw(A--E--D,linewidth(0.7)+linetype("3 3")); draw(B--E,linewidth(0.7)+linetype("2 2"));
label("A",A,N,sm); label("B",B,S,sm); label("C",C,S,sm);label("D",D,(1,0),sm);label("E",E,NW,sm);
[/asy]

level

Level 4

type

Geometry

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Source and history

task_id
5acc2685-d14c-5bd3-8972-59a673c1ab87
task_key
geometry--test--5acc2685-d14c-5bd3-8972-59a673c1ab87
task_revision_id
1
config / split
geometry / test

Official source

initial import