If the noncommon sides of two adjacent angles form a right triangle, then the angles space complementary.

You are watching: If two angles are congruent, then they are right angles

If the noncommon political parties of two nearby angles kind a appropriate angle, climate the angles are complementary.

Two parallel currently are reduced by a transversal, if and only if every pair of alternative interior angle is supplementary.

Two parallel currently are cut by a transversal, if and only if every pair of alternate interior angles is supplementary.

Two parallel lines are reduced by a transversal, if and only if every pair of consecutive internal angles is supplementary.

Two parallel currently are reduced by a transversal, if and only if every pair the consecutive inner angles is supplementary.

Two parallel currently are cut by a transversal if and only if every pair of alternating exterior angle is congruent.

Two parallel currently are cut by a transversal, if and also only if each pair of alternating exterior angle is congruent.

In a plane, a heat is perpendicular to among two parallel lines, if and only if the is parallel to the other.

In a plane, a heat is perpendicular to one of two parallel lines, if and only if the is parallel come the other.

In a plane, if two lines are equidistant from a 3rd line, then the 2 lines room parallel to each other.

In a plane, if two lines room equidistant from a third line, climate the 2 lines space parallel to each other.

If two angles the one triangle room congruent to two angles of a 2nd triangle, then the third angles of the triangle are congruent.

If two angles that one triangle are congruent to 2 angles of a 2nd triangle, then the third angles the the triangle are congruent.

The measure up of en exterior edge of a triangle is same to the sum of the actions of the two remote inner angles.

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The measure of one exterior edge of a triangle is same to the sum of the steps of the 2 remote inner angles.

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Geometry1st EditionChard, Earlene J. Hall, Edward B. Burger, Kennedy, Paul A., Seymour, Steven J. Leinwand, Waits

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