Question

I need help with congruent triangles. Attachment of photo in comments below.

Answer 1

post it

Answer 2

where is it ?

Answer 3

what question are we looking at

Answer 4

Question 12

Answer 5

can you tell it is one of those equilateral ones

Answer 6

the two sides with the hash marks are the same measure, 3
then those equal angles relate that third side to be the same, 3

Answer 7

so this is an isosceles triangle how is there signed - yes ?

Answer 8

same ideas as the other ones, just 2 in one prob

Answer 9

AC congruent BC

Answer 10

because angle A = angle B

Answer 11

there is signed false sure

Answer 12

I'm confused.

Answer 13

hmm

Answer 14

I need to find the value of each variable.

Answer 15

http://www.mathsisfun.com/geometry/triangles-interactive.html <--- notice there

pick the "isosceles" triangle, the one with two equal sides

notice what happens to the two angles they touch

Answer 16

pick isosceles, since yours also has two equal sides, notice the tickmarks

and move the triangle's leg, extend stretch, move it about
notice, two sides are always equals, and also notice the angles
anything particular about the angles?

Answer 17

I'm sorry I'm on a tablet. It doesn't let me move around the legs of triangle.

Answer 18

equal angles in a triangle have also equal opposite side lengths, and the other way around

think of a line segment, and now attach a segment on each end with the same angle towards each other, they will meet half way and have the same lengths