first one is brainlyest On a piece of paper, use a protractor to construct a triangle with angle measures of 50° and 70º.What is the measure of the third angle?60°80°100°180°On a piece of paper, use a protractor and a ruler to construct two equilateral triangles: one with a side length of 4 inches and one with a side length of 5 inches.Which statement is true about the two triangles?It is impossible to construct equilateral triangles with these side lengths.The two triangles are the same size and same shape.The two triangles are the same size but not the same shape.The two triangles are the same shape but not the same size.On a piece of paper, use a protractor to construct right triangle ABC with AB=3 in. , m∠A=90° , and m∠B=45° .What statement is true about the triangle?BC=3 in.BC=6 in.AC=6 in.AC=3 in.thanks bra

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general 11 months ago 8702

Complete the paragraph proof. Given: ∠ABR and ∠ACR are right angles AB ≅ BC BC ≅ AC Prove: bisects ∠BAC It is given that ∠ABR and ∠ACR are right angles, AB ≅ BC and BC ≅ AC Since they contain right angles, △ABR and △ACR are right triangles. The right triangles share hypotenuse AR, and reflexive property justifies that AR ≅ AR. Since AB ≅ BC and BC ≅ AC, the transitive property justifies AB ≅ AC. Now, the hypotenuse and leg of right △ABR is congruent to the hypotenuse and the leg of right △ACR, so △ABR ≅ △ACR by the HL congruence postulate. Therefore, by CPCTC, and bisects ∠BAC by the definition of bisector.

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general 11 months ago 5559