Given: angle YRS is congruent to angle TSR and segment RY is congruent to segment TS Prove: triangle RST is congruent to triangle SRY Prove the theorem. Let triangle ABC be a triangle. Then AB greater than AC if and only if mu(angle ACB) greater...
In a rhombus MPKN with an obtuse angle K the diagonals intersect each other at point E. The measure of one of the angles of a triangle PKE is equal 16 . Find the measures of all angles of triangle PKE Additional details would be needed to prove the quadrilateral...
Given△ABC with∠ACB=90°,∠ABC=15°,AC=1,then the length of BC is( ) A、 2+ 3 B、 3+ 2 C、 3- 2 D、 2+ 3Given in the△ABC,a,b,c are three sides of the triangle,and 3 a= 2 b+ 1 c,then∠A is( )(英汉词典acute angle:锐角;obtuse angle:钝角) A、acute angle B...